Hoffman Specialty® General Catalog HS-900E
ESP-PLUS TM For computer aided selection of Steam Trap and Regulators, please refer to the “Steam Specialty Component Selectors’ in the Hoffman Specialty website or, for a stand-alone version of ESP-PLUS, contact your local Bell & Gossett Representative.
Table Of Contents FLOAT AND THERMOSTATIC How to Select SERIES ® PAGE SERIES PAGE C 14 B1 28 H 8 B2 28 I 12 B3 32 X 14 B4 32 18 B6 38 Vents 26 Vacuum Breakers B0 Regulators 105 Valves THERMOSTATIC THERMODISC 22 TD6520 40 9C 23 TD6420 40 17C 20 17C 24 Dura-stat® 24 Pumps 8C Y-Strainers Replacement Modules INVERTED BUCKET All Competitive Changeover Competitive Changeover Steam Traps Steam Traps Hoffman Specialty® Heat Exchangers Selection Guides 1
Hoffman Specialty® Regulators PRESSURE (for Steam Service) SERIES Self-Contained Pressure Reducing 754 58 2000 42 120 Pilot Operated Typical Applications Vacuum Breakers Regulators Steam Traps Table of Contents Main Valves - How to Size Operation Pilots - How to Select Operation PAGE TEMPERATURE (for Steam Service) Tempering Valves All All Self-Activated • Hardware Kits 49 AP Main Valves - How to Size Operation Pilots - How to Select Operation SPS 1140 60 1141 60 2000 42 120 All
Table Of Contents STEAM SERIES Hoffman Specialty® Vents PAGE 76 85 8C 86 3 87 4 87 74 87 1A 88 40 88 70A 88 1B 89 41 89 Special Radiator 90 79 90 508 92 550 92 790 91 791 91 792 91 Hoffman Specialty® Valves DRAIN Convector 78 SERIES PAGE 793 93 185C 94 SUPPLY 43 89 89 71 89 508 89 Selection Guides 45 Heat Exchangers 84 90 Pumps 75 77 Y-Strainers 84 152 Valves 4A All Vents Main High Pressure How to Select PAGE Vacuum Breakers All SER
Steam Traps Table of Contents Hoffman Specialty® Vacuum Breakers VACUUM BREAKERS SERIES Selection Guides Heat Exchangers Pumps Y-Strainers Valves Vents Vacuum Breakers Regulators 62 4 PAGE 82 Hoffman Specialty® Y-Strainers Y-STRAINERS For Steam or Water SERIES 400 PAGE 96
Table Of Contents Reference Saturated Steam Table ..........................................................................................................................100 Steam Flow Requirement for Heating Water .........................................................................................102 Steam Traps Technical Information and Selection Guidelines Liquid Weight and Specific Heat Table ..................................................................................................
Steam Traps Hoffman Specialty® Steam Traps Notes _____________________________________________________________________ _____________________________________________________________________ Vacuum Breakers Regulators _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ___________
Hoffman Specialty® Steam Traps Series C, H, I and X he Series C, H, I and X Float and Thermostatic Traps are designed for commercial and industrial heating applications such as steam main drip traps, unit heaters, tank coils, air make-up coils, shell and tube heat exchangers, or others that require frequent start ups and continuous modulating loads. Regulators T ® Steam Traps Float and Thermostatic Steam Traps • Maximum operating pressure 175 psi (12.1 bar) • Maximum capacity 60,000 lb/hr.
Steam Traps Hoffman Specialty® Steam Traps Float and Thermostatic Steam Traps ® Series H I G • Models 3⁄4" - 2" feature Universal 4 - port tappings, (2 inlets, 2 outlets) that provide versatility to allow easy piping and system monitoring D B B D • Sizes available: – 3⁄4" NPT and BSPT – 1" NPT and BSPT – 11⁄4" NPT – 11⁄2" NPT – 2" NPT A A • Stainless steel internal components ⁄4", 1", 11⁄4" 3 • Resistant to water hammer and corrosion E E C C H H Drain • Below condensate level seat design pre
Hoffman Specialty® Steam Traps Steam Traps Series H additional inlet and outlet features Models 3⁄4" - 2" IN IN PLUG PLUG OUT OUT IN PLUG PLUG IN OUT TEST TEST OUT • Allows positioning options for easy service • Additional inlet provides a convenient location for vacuum breakers or separate external air vents. Vacuum breakers are required for systems with a modulating temperature regulating valve. External air vents are required when the trap discharges into a wet return line.
Steam Traps Hoffman Specialty® Steam Traps Float and Thermostatic Steam Traps (continued) Series H ® (continued) • Determine the differential pressure across the trap (inlet pressure - outlet pressure). On applications where the steam is controlled by a modulating temperature regulator, the trap differential should be 1/2 psi (0.34 bar). • Determine the capacity based on the differential pressure and the required capacity of the trap to open against the maximum inlet steam pressure.
Hoffman Specialty® Steam Traps 1 Steam Traps Series H Competitive Dimensional Comparison of Distance Between Inlet and Outlet Pipes 2 A 3 4 Dimensions in.
Steam Traps Hoffman Specialty® Steam Traps Float and Thermostatic Steam Traps (continued) ® Series I In-line • In-line piping design provides complete drainage while minimizing vertical height change D A • Ideal for overhead applications • For commercial and industrial applications such as air make-up coils, cooking kettles and unit heaters B F&T TRAP MAX. PRESS. MAX. TEMP. MAX. PRESS. DIFF.
Hoffman Specialty® Steam Traps ® Steam Traps Series I In-line (continued) • Determine the differential pressure across the trap (inlet pressure - outlet pressure). On applications where the steam is controlled by a modulating temperature regulator, the trap differential should be 1/2 psi (0.34 bar). • Determine the capacity based on the differential pressure and the required capacity of the trap to open against the maximum inlet steam pressure.
Steam Traps Hoffman Specialty® Steam Traps Float and Thermostatic Steam Traps (continued) A A ® Series C and X E E • For large high capacity units B B D D • Sizes available: Series C: 11/4" NPT and BSPT 11/2" NPT and BSPT 2" NPT and BSPT 21/2" NPT Series X: 2" NPT F F JJ H H C C • Resistant to water hammer and corrosion Series C 11/4" & 11/2" • Below condensate level seat design prevents steam leakage Drain DRAIN A A H H • Rugged stainless steel thermostatic element eliminates air binding
Hoffman Specialty® Steam Traps Steam Traps Ordering Information To convert previously manufactured Hoffman Specialty F & T Trap Model numbers, see page 17.
Steam Traps Hoffman Specialty® Steam Traps Float and Thermostatic Steam Traps (continued) Capacities (Series C and X) • Determine the differential pressure across the trap (inlet pressure - outlet pressure). On applications where the steam is controlled by a modulating temperature regulator, the trap differential should be 1/2 psi (0.34 bar). • Determine the capacity based on the differential pressure and the required capacity of the trap to open against the maximum inlet steam pressure.
Hoffman Specialty® Steam Traps Previously Manufactured NPT Size Part Model No. in.
Steam Traps Hoffman Specialty® Steam Traps Float and Thermostatic Steam Traps (continued) Cover Assemblies for Spirax Sarco Float & Thermostatic Steam Traps Spirax Sarco F&T Trap Model Number Pressure psi (bar) Size in. 3 ⁄4 FT15 15 (1.1) 1 11⁄4 11⁄2 3 ⁄4 FT30 30 (2.1) 1 11⁄4 11⁄2 3 ⁄4 FT75 75 (5.3) 1 11⁄4 11⁄2 3 ⁄4 FT125 125 (8.
Hoffman Specialty® Steam Traps _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ____________________________________________________________
Hoffman Specialty® Steam Traps Steam Traps Thermostatic Steam Traps Series 17C Balanced Pressure The Series 17C Balanced Pressure Thermostatic Steam Traps are for institutional, commercial and residential heating system applications such as schools, hospitals, apartment buildings, homes or others where low or moderate water hammer may occur.
Hoffman Specialty® Steam Traps Steam Traps ® Series 17C Balanced Pressure Dimensions, in. (mm) Model Size in.
Steam Traps Hoffman Specialty® Steam Traps Thermostatic Steam Traps (continued) ® Series 8C Balanced Pressure The Series 8C Balanced Pressure Thermostatic Steam Traps are for institutional and commercial heating system applications or others that require high capacity operation.
Hoffman Specialty® Steam Traps Steam Traps Thermostatic Steam Traps (continued) ® Series 9C Balanced Pressure The Series 9C are for institutional and commercial heating system applications or others that require high capacity operation. • Subcooling for extremely efficient system operation and elimination of flash steam losses on low pressure systems.
Steam Traps Hoffman Specialty® Steam Traps Thermostatic Steam Traps (continued) Competitive brand changeover to Hoffman Specialty Model 17C ® Dimensions in.
Hoffman Specialty® Steam Traps _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ____________________________________________________________
Steam Traps Hoffman Specialty® Steam Traps Inverted Bucket Steam Traps Series B ® The Series B inverted bucket traps are designed for a wide range of industrial applications including steam mains, laundry and dry cleaning plants, food processing and those that require a lift in the discharge lines. Series B0 Inverted Bucket Traps The Series B0 Inverted Bucket Traps are designed for a wide range of industrial applications including unit heaters, laundry and process equipment and steam line drip traps.
Hoffman Specialty® Steam Traps Capacities (Gross Ratings) B0 Seat Pressure psi (bar) 1/2 (.035) 1 (0.07) 5 (0.35) 10 15 20 30 (0.69) (1.03) (1.38) (2.1) Capacities lbs./hr (kg/hr) 3/16 (4.7) 20 (1.4) 200 (91) 270 (122) 450 (204) 560 (254) 640 (290) 690 (313) 1/8 (3.2) 80 (5.5) 80 (36) 110 (50) 200 (91) 300 (136) 360 (163) 420 (190) 7/64 (2.8) 125 (8.6) 55 (25) 90 (41) 145 (66) 195 (88) 3/32 (2.4) 150 (10.3) 70 (32) 110 (50) 150 (68) 40 (2.8) 50 (3.5) 60 (4.2) 80 (5.
Steam Traps Hoffman Specialty® Steam Traps Inverted bucket Steam Traps Series b ® The Series B inverted bucket traps are designed for a wide range of industrial applications including steam mains, laundry and dry cleaning plants, food processing and those that require a lift in the discharge lines.
Hoffman Specialty® Steam Traps Steam Traps ® Series B How to Select The trap capacity should be selected based on the minimum differential pressure between the inlet pressure and outlet pressure. The trap seat must be capable of opening against the maximum inlet steam pressure. When the traps are used on applications where the steam is controlled by a modulating temperature regulator, the trap is normally selected to handle the full condensate load including safety facto r at 1/2 psi (.
Steam Traps Hoffman Specialty® Steam Traps Inverted Bucket Steam Traps (continued) Ordering Information (Specify the part number on your order) Model (A) units are basic. Model (B) units have a built-in strainer and thermic vent for fast venting. Model (S) units have a built-in strainer. Model (T) units have an optional thermic vent built-in for faster venting.
Hoffman Specialty® Steam Traps Series B ® NPT Part Number BSPT Part Number Seat Differential Pressure Rating psi (bar) ⁄2 ⁄2 1 ⁄2 1 ⁄2 3 ⁄4 3 ⁄4 3 ⁄4 3 ⁄4 404316 404317 404318 404319 404340 404341 404342 404343 404616 404617 404618 404619 404640 404641 404642 404643 180 180 180 180 180 180 180 180 (12.4) (12.4) (12.4) (12.4) (12.4) (12.4) (12.4) (12.4) 250 250 250 250 250 250 250 250 (17.3) (17.3) (17.3) (17.3) (17.3) (17.3) (17.3) (17.
Inverted Bucket Steam Traps (continued) ® • Removable covers for easy in-line service DATE CODE MAX TEMP. ITT D D 500 X MAX PRESS.
Hoffman Specialty® Steam Traps ® Steam Traps Series B Capacities (Gross Ratings) Differential Pressure psig (bar) Orifice Size Series In (mm) B3 B4 Seat Pressure psi (bar) 1/2 (.035) 1 (0.07) .500 (12.7) .375 (9.53) .281 (7.14) .250 (6.35) .219 (5.56) .188 (4.78) 15 (1.0) 30 (2.1) 75 (5.2) 125 (8.6) 180 (10.4) 250 (17) 1450 (658) 720 (327) 500 (227) 435 (197) 300 (136) 256 (116) .625 (16) .5 (12.7) .375 (9.53) .344 (7.7) .281 (7.14) .25 (6.35) 15 (1.0) 30 (2.1) 75 (5.2) 125 (8.6) 180 (10.
Steam Traps Hoffman Specialty® Steam Traps Inverted Bucket Steam Traps (continued) ® Series B Ordering Information (Specify the part number on your order) Model (A) units are basic. Model (B) units have a built-in strainer and thermic vent for fast venting. Model (S) units have a built-in strainer. Model (T) units have an optional thermic vent built-in for faster venting.
Hoffman Specialty® Steam Traps ® Steam Traps Series B Series B4 Ordering Information Size in.
Steam Traps Hoffman Specialty® Steam Traps Inverted Bucket Steam Traps (continued) ® Series B Series B4 Ordering Information - continued Size in.
Hoffman Specialty® Steam Traps _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ____________________________________________________________
Steam Traps Hoffman Specialty® Steam Traps Inverted Bucket Steam Traps (continued) ® Series B Series B6 • Available in sizes 11⁄2" and 2" NPT A • Maximum capacity 20,000 lbs./hr. (9072 kg/hr.
Hoffman Specialty® Steam Traps Steam Traps ® Series B Capacities (Gross Ratings) Series B6 1 (0.07) 2 (0.14) Pressure Differential Pounds Per Square Inch (bar) 5 10 15 25 30 40 50 (0.35) (0.69) (1.0) (1.69) (2.1) (2.8) (3.5) Capacity lbs./hr. (kg/hr.) 3930 5250 (1784) (2383) 3100 4160 (1406) (1887) 1720 2280 (780) (1035) 1180 1570 (535) (712) 7330 (3327) 5400 (2449) 3200 (1452) 2200 (998) 11000 (4994) 7600 (3447) 4800 (2179) 3300 (1498) Orifice Seat Size Pressure 1/2 (.035) In psi (mm) (bar) .
Steam Traps Hoffman Specialty® Steam Traps Thermodisc Steam Traps Series TD ® The Series TD Thermodisc traps are designed for applications such as high-pressure steam drips and tracer lines, or others with light to moderate loads.
Hoffman Specialty® Steam Traps Steam Traps ® Series 650 (continued) Capacities (Gross Ratings) - at 10°F Below Saturation Model Size in. TD6523 3 TD6524 1 TD6526 3 TD6528 1 TD6423 3 TD6424 1 TD6426 3 TD6428 1 ⁄8 ⁄2 ⁄4 2 5 10 (0.14) (0.35) (0.69) 180 185 (82) (84) 290 310 (132) (141) 395 420 (179) (191) 620 660 (201) (299) ⁄8 ⁄2 ⁄4 190 (86) 345 (156) 465 (211) 730 (331) 315 (143) 315 (143) 650 (295) 650 (295) 25 (1.
Hoffman Specialty® Regulators Pressure and/or Temperature Pilot Operated Steam Regulators Regulators Series 2000 The Hoffman Specialty Series 2000 consists of main valves, pilot valves, wells and hardware kits. They are designed to meet a wide range of temperature, pressure and capacity requirements and provide accurate, dependable, low maintenance operation. The Series 2000 Regulators meet MIL Spec MIL-V-16733D (Type IV) and MIL-V-18433B (Type I, Style A, Class 2).
Hoffman Specialty® Regulators Series 2000 Main Valves The Series 2000 Main valve is rugged and stable in response for trouble free, dependable operation over a wide range of conditions and applications.
Hoffman Specialty® Regulators Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Series 2000 Main Valves Dimensions (Main Valves) Model 2100 and 2150 Screwed NPT Ends — Maximum pressure 250 psig (17.3 bar) C Dimensions in. (mm) Regulators NPT Valve Size in.
Hoffman Specialty® Regulators Series 2000 Main Valves Steam Capacities — Full Port lbs./hr. (kg/hr.) Models 2100, 2200, 2300 Main Valve Size NPT Size, in. Pressure psig (bar) Cv ⁄2" NPT 3.9 3 Flanged Valves, in. (mm) 1 1 ⁄4" NPT 1" NPT 1 ⁄4" NPT 1 ⁄2" NPT 2" NPT/Flange 21⁄2"(65) 3" (80) 4" (100) 6" (150) 8.3 10.6 20.2 24.2 34.2 50.3 78.7 139.6 302.2 20† (1.4) 0-5 (0-0.
Hoffman Specialty® Regulators Series 2000 Main Valves Steam Capacities — Normal Port lbs./hr. (kg/hr.) Models 2100, 2200, 2300 Main Valve Size NPT Size, in. Pressure psig (bar) OUT†† IN Regulators Cv 1 Flanged Valves, in. (mm) ⁄4" NPT 1" NPT 1 ⁄4" NPT 1 ⁄2" NPT 2" NPT/Flange 21⁄2"(65) 3" (80) 4" (100) 6" (150) 2.7 5.9 8.3 16.2 20.2 26.7 38.5 66.7 95.8 239.4 ⁄2" NPT 3 1 1 20† (1.4) 0-5 (0-0.
Hoffman Specialty® Regulators Series 2000 Main Valves Steam Capacities — Reduced Port lbs./hr. (kg/hr.) Models 2100, 2200, 2300 Main Valve Size NPT Size, in. Pressure psig (bar) OUT†† IN 1 Cv Flanged Valves, in. (mm) ⁄4" NPT 1" NPT 1 ⁄4" NPT 1 ⁄2" NPT 2" NPT/Flange 21⁄2"(65) 3" (80) 4" (100) 6" (150) 1.0 3.9 5.9 10.6 16.2 21.1 28.3 41.3 70.2 163 ⁄2" NPT 3 1 1 0-5 (0-0.
Hoffman Specialty® Regulators Series 2000 Main Valves Steam Capacities – Low Pressure lbs./hr. (kg/hr.) Models 2150, 2250 Main Valve Size NPT Size, in. Pressure psig (bar) OUT†† 1" NPT 1 ⁄4" NPT 1 ⁄2" NPT 2" NPT/Flange 21⁄2"(65) 3" (80) 4" (100) 6" (150) 6.1 10.5 21.5 26.8 43 53.2 63.8 127.1 347.9 2 (.14) 0-1 (0-.
Hoffman Specialty® Regulators Series 2000 Main Valve Ordering Information Series 2000 main valves, pilots, wells, and hardware kits MUST BE ORDERED as separate line items.
Hoffman Specialty® Regulators Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Regulators Series SPS Spring Pressure Control Pilots The Series SPS Spring pilot valves are designed for applications such as steam to hydronic converters, domestic hot water, manufacturing process, or others that require constant outlet pressure. The Series SPS can also be used in conjunction with a series STPA Temperature pilot as a pressure limiter.
Hoffman Specialty® Regulators Series AP Air Pressure Control Pilots The Series AP Air Pressure pilot valves are designed for applications such as injection molding, lab equipment, or others that require frequent outlet pressure changes. The required Air PRV Regulator allows remote adjustment of the outlet steam pressure.
Hoffman Specialty® Regulators Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Series STPA Self-Contained Temperature Control Pilots Regulators The Series STPA Self-Contained Temperature pilot valves are designed for applications such as steam to water converters, domestic hot water, manufacturing process, or others that require accurate temperature control of heated fluids.
Hoffman Specialty® Regulators Ordering Information Actuator Assemblies (includes actuator, knob and set screw) Capillary Model Part Temperature Range Length Weight Number Number °F (°C) ft. (m) lbs. (kg) 400844 400845 400847 400848 400850 400851 400853 400854 400856 400857 400859 50–200 50–200 50–200 50–200 50–200 150–300 150–300 150–300 150–300 150–300 250–400 (10–93) (10–93) (10–93) (10–93) (10–93) (66–149) (66–149) (66–149) (66–149) (66–149) (121–204) 10 15 20 25 30 10 15 20 25 30 10 (3) (4.6) (6.
Hoffman Specialty® Regulators Pneumatic Temperature Control Pilots Regulators Series 315 PNT For Shop Quality Air Signal Port The Series 315 PNT Pneumatic Temperature pilots are designed for applications such as refineries and factories, or others where rapidly changing load requirements occur. Pneumatic temperature pilots provide greater accuracy than self-contained temperature pilots.
Hoffman Specialty® Regulators Series 240 PNT For Control Quality Air • Low air consumption of 0.008 scfm (.00022m3) 63/16" (157mm) 43/4" (121mm) 9/16" (14mm) 15/8" (41mm) Front View 3/8" (12mm) Dia. Typical of 3 Holes 513/16" (148mm) 43/16" (106mm) 23/8" (60mm) Side View • Calibrated temperature dial allows easy adjustment • Copper sensing element 4" (101mm) • Copper well (included) allows bulb removal without draining system • Capillary length 6 ft. (1.
Hoffman Specialty® Regulators Electronic Temperature Control Pilots Regulators Series GT610-IP Electro-Pneumatic Transducer The Series GT610-IP Electro-Pneumatic transducer is designed for temperature control applications with a 35 psig (2.4 bar) clean filtered air supply and where a 4 to 20 mA DC or 0 to 10 VDC signal is provided by an electronic sensor. An Air Pressure Pilot, an Air PRV Regulator and a Series 2000 Main Valve Steam Regulator must be used with the Series GT610-IP Relay. • 6-30 psig (.
Hoffman Specialty® Regulators Series SLD Solenoid Pilots Solenoid pilots are designed for heating, or other applications where overheating will not be harmful, since they remain open during a power failure. Regulators Solenoid pilots are used with other pilots for overrides in domestic hot water or safety applications. The “Normally Closed” Solenoid pilots are designed to shut down the Main valve if there is a power failure.
Hoffman Specialty® Regulators Self-Contained Pressure Reducing Valves Regulators Series 754 The Series 754 is designed for applications such as commercial kitchens, labs, dry cleaners, or others that require system pressure reduction of steam in small equipment.
Hoffman Specialty® Regulators Series 754 (continued) Capacities Basic Steam Table - Pounds Per Hour (kg/hr.) 1/2 & 3/4 Inch Valves 10 (.7) 46 (21) 38 (17) 20 (1.4) 65 (30) 65 (30) 61 (28) 45 (20) 30 (2.1) 83 (38) 83 (38) 83 (38) 83 (38) 71 (32) 40 (2.8) 102 (46) 102 (46) 102 (46) 102 (46) 102 (46) 81 (37) 79 (36) Inlet Pressure psig (bar) 50 70 100 (3.5) (4.8) (6.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators Regulators Series 1140 & 1141 The Series 1140 & 1141 Temperature Regulators are designed to maintain a desired temperature for commercial and institutional heating and cooling applications. They are self-actuated and vapor pressure operated. Series 1140 Regulators are cross ambient filled and may be used where ambient temperature exceeds the set control temperature.
Hoffman Specialty® Regulators Series 1140 & 1141 Regulators (continued) Dimensions in. (mm) Body Type Size in.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Regulators Series 1140 & 1141 (continued) Cv (Kv) Values Valve Size NPT Valve Size, in. Body Code 01 1/ 2 NPT 3/ 4 NPT 1 NPT Flanged Valve Size, in. (mm) 1 1/4 NPT 1 1/2 NPT 2 NPT 21/2 (65) 3 (88) 4 (100) Cv (Kv) Values 2.7 (2.3) 5.7 (4.9) 11 (9.5) 16 (13.8) 20 (17.3) 25 (21.6) 02 & 02R 2.7 (2.3) 5.7 (4.9) 11 (9.5) 16 (13.8) 20 (17.3) 25 (21.6) 4.3 (3.7) 7.9 (6.8) 13 (11.3) 20 (17.3) 25 (21.6) 9.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Component Ordering Information Series 1140 Actuators (Cross ambient filled) Body Bracket Assemblies 401299 401300 401301 401302 401303 401304 401305 401306 401307 401308 401309 401310 401312 401311 401313 401314 401317 401320 401321 401322 401323 401324 401325 401350 401353 401356 401359 401362 401365 401368 401371 401377 401380 401383 401386 401389 401392 401387 401395 401396 401397 401398 401399
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 Regulators Direct Acting The Series 1140 and 1141 Direct Acting Regulators are designed for commercial and institutional heating systems and equipment applications such as hot water tanks, vats, steam tables, sterilizing equipment, instantaneous heaters, apartment buildings, or others that require steam temperature control.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Capacities – Steam Flow, lbs./hr. (kg/hr.) vs Pressure Drop psi (bar) Body Code 01 Direct Acting, Single Seated Valves 3 (.2) 5 (.35) 10 (.7) 15 (1.0) 20 (1.4) 25 (1.7) 30 (2.1) 40 (2.8) 50 (3.5) 2 1 3 2 8 6 4 12 9 6 16 12 8 20 15 10 25 20 15 35 30 20 40 30 20 (.14) (.07) (.21) (.14) (.56) (.42) (.28) (.83) (.62) (.42) (1.1) (.83) (.56) (1.4) (1.0) (.69) (1.7) (1.4) (1.0) (2.4) (2.1) (1.4) (2.8) (2.1) (1.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Regulators Body Code 02 • Steam or Water Service— Used for dead end shut-off where higher temperatures and pressures prevail • Stainless Steel Single Seat and Trim— 1⁄2" —Removable stainless steel seat and cone disc 3⁄4" - 2" —Integral stainless steel seat ring and bottom guided seat disc • Body—Brass body,union ends • Maximum Differential Pressure: 1 ⁄2" NPT - 125 psi (8.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Capacities – Steam Flow, lbs./hr. (kg/hr.) vs Pressure Drop psi (bar) Body Code 02 Direct Acting, Single Seated Valves Inlet Outlet 3 (.2) 5 (.35) 10 (.7) 15 (1.0) 20 (1.4) 25 (1.7) 30 (2.1) 40 (2.8) 50 (3.5) 60 (4.1) 70 (4.8) 80 (5.5) 90 (6.2) 100 (6.9) 125 (8.6) 2 1 3 2 8 6 4 12 9 6 16 12 8 20 15 10 25 20 15 35 30 20 40 30 20 50 40 30 60 50 40 30 70 60 50 40 80 70 60 30 40 90 80 70 60 50 110 100 90 80 70 60 (.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Regulators Body Code 03 • Steam Service Only— Used for dead end service up to maximum body steam pressure • Stainless Steel Balanced Single Seat and Trim— Removable stainless steel seat, disc, and balancing piston • Body— 3⁄4" through 2" NPT—brass body, union ends • Maximum Differential Pressure: 3 ⁄4" NPT — 250 psi (17.3 bar) 1" NPT — 200 psi (13.8 bar) 11⁄4" NPT — 200 psi (13.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Body Code 03 Direct Acting, Balanced Single Seated Valves (Steam Service Only) Size in. Pressure psi (bar) Inlet Outlet Drop (.2) 5 (.35) 10 (.7) 15 (1.0) 20 (1.4) 25 (1.7) 30 (2.1) 40 (2.8) 50 (3.5) 60 (4.1) 70 (4.8) 80 (5.5) 90 (6.2) 100 (6.9) 125 (8.6) 150 (10.3) 175 (12.1) 200 (13.8) 250 (17.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Regulators Body Code 05 • Steam or Water Service – For high steam pressure and/or high capacity applications. • Stainless Steel Double Seat and Trim – Trim consists of seat rings and center guided plunger. Double seated valves have 1% allowable leakage rate. • Body – 3⁄4" - 2" NPT – brass body, union ends 21⁄2" - 4" (65-100mm) – Iron body, flanged, faced and drilled for 125 Ibs. (13.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Regulators Body Code 05 • Steam or Water Service – For high steam pressure and/or high capacity applications. • Stainless Steel Double Seat and Trim – Trim consists of seat rings and center guided plunger. Double seated valves have 1% allowable leakage rate. • Body – 3⁄4" - 2" NPT – brass body, union ends 21⁄2" - 4" (65-100mm) – Iron body, flanged, faced and drilled for 125 Ibs. (13.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Capacities – Steam Flow, lbs./hr. (kg/hr.) vs Pressure Drop psi (bar) Body Code 05 Direct Acting, Balanced Double Seated Valves 3 (.2) 5 (.35) 10 (.7) 15 (1.0) 20 (1.4) 25 (1.7) 30 (2.1) 40 (2.8) 50 (3.5) 60 (4.1) 70 (4.8) 80 (5.5) 90 (6.2) 100 (6.9) 125 (8.6) 150 (10.3) 175 (12.1) 200 (13.8) 250 (17.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Capacities — Water Flow vs Pressure Drop 3" 21/2" (65mm) (80mm) 4" (100mm) 30 (2.1) 20 (1.4) 10 (.69) 9 (.62) 8 (.56) 7 (.49) 6 (.42) 5 (.34) 4 (.28) 3 (.21) 2 (.14) (11,360) 3000 40 (151) (7570) 2000 30 (113) (1890) 500 (2270) 600 (2650) 700 (3030) 800 (3400) 900 (3785) 1000 20 (76) (1515) 400 5 6 7 8 9 10 (19) (23) (26) (30) (34) (38) (1135) 300 4 (15.1) (755) 200 3 (11.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Reverse Acting The Series 1140 and 1141 Reverse Acting Regulators are designed for commercial and institutional cooling applications such as re-circulating lines, diesel engines, cooling towers, or others that require liquid temperature control.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Regulators Body Code 05R • Steam or Water Service • Stainless Steel Trim — center guided plunger • Body—3⁄ 4" - 2" NPT—brass body, union ends 21⁄ 2" - 4" (65-100mm)—Iron body, flanged, faced and drilled for 125 lbs. (13.8 bar) standard • Maximum Differential Pressure: 3 ⁄4" NPT — 250 psi (17.3 bar) 1" - 2" NPT — 200 psi (13.8 bar) 21⁄ 2" - 4" (65 - 100mm) — 125 psi (8.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Capacities — Water Flow vs Pressure Drop 11/4" 11/2" 2" NPT NPT NPT 1" NPT 3" 21/2" (65mm) (80mm) 4" (100mm) 40 (2.8) 30 (2.1) 20 (1.4) 10 (.69) 9 (.62) 8 (.56) 7 (.49) 6 (.42) 5 (.34) 4 (.28) 3 (.21) 2 (.14) 40 (151) (11,360) 3000 30 (113) (7570) 2000 20 (76) (1890) 500 (2270) 600 (2650) 700 (3030) 800 (3400) 900 (3785) 1000 5 6 7 8 9 10 (19) (23) (26) (30) (34) (38) (1515) 400 4 (15.1) (1135) 300 3 (11.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 1140 & 1141 (continued) Three Way The Series 1140 and 1141 Three Way Regulators are designed for commercial and institutional applications such as boilers, engines, or others that require mixing, tempering, or diverting liquids at a set temperature.
Hoffman Specialty® Regulators Series 1140 & 1141 (continued) Capacities — Water Flow vs Pressure Drop Body Code 06 Three Way Valves 3 " /4 NPT 1" NPT 11/4" NPT 11/2" NPT 2" NPT Regulators 1 " /2 NPT 60 (4.2) 21/2" 3" 4" (65mm) (80mm) (100mm) 50 (3.5) 20 (1.4) 10 (.69) 9 (.62) 8 (.56) 7 (.49) 6 (.42) 5 (.34) 4 (.28) 3 (.
Hoffman Specialty® Regulators Tempering Valves Series 21 Regulators Hoffman Specialty Tempering Valves are designed to control temperature in water mixing applications such as radiant floor heating, hot water heating and industrial processing. They can also be used to divert flow in cooling systems. Series 21 Valves can be used for residential, industrial, commercial or institutional applications.
Hoffman Specialty® Regulators Series 21 (continued) 1" 11/4" NPT NPT 11/2" 2" NPT NPT 40 (2.8) 30 (2.1) 20 (1.4) 10 (.7) 9 (.62) 8 (.55) 7 (.49) 6 (.4) 5 (.35) 4 (.28) 3 (.2) 2 (.14) (757) 200 40 (189) 50 (227) 60 (265) 70 (303) 80 (341) 90 (379) 100 30 5 6 7 8 9 10 (18.9) (22.7) (26.5) (30.3) (34.1) (38) (151) 4 (15.1) (114) 3 (11.4) 20 2 (7.6) (76) 1 1 (.069) (3.8) Cv 3 " /4 NPT 100 (6.9) 90 (6.2) 80 (5.5) 70 (4.8) 60 (4.1) 50 (3.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 21 Applications Regulators Panel Heating Installation Note: Circulating pump, illustrated in the above application, circulate tempered water through the system. The aquastat shuts the circulating pump off if the tempered water exceeds the temperature set point, which is normally ± 5°F (± 2°C) of the tempering valve discharge.
Hoffman Specialty® Regulators Thermostatic Temperature Regulators (continued) Series 21 (continued) Engine Jacket Temperature Control Installation Regulators Radiant Heating Installation 81
Hoffman Specialty® Regulators Vacuum Breakers Vacuum Breakers Model 62 Part No. 401446 • For use on closed vessels and piping systems to control induced vacuum within safe limits • Adjustable from 1⁄4" - 20" (8-508mm) Hg vacuum - factory set at 2” (51mm) Hg vacuum • 3⁄4" NPT straight shank • Maximum operating temperature 366°F (186°C) • Maximum operating pressure 150 psig (10.
Hoffman Specialty® Regulators Notes _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ______________________________________________________
Hoffman Specialty® Regulators Main Steam Vents How to Select Steam Vents Vents Model Number 1A 70A 40 1B 41 43 45 71A 71B 71C 508 4A 75 75H 76 3 74 4 8C Radiator (Angle Type) X X X Convector (Bottom Inlet) Unit Heater Mains X X X X X X X X X X X X X X Model 4A Part No.
Hoffman Specialty® Vents Model 76 Part No. 401432 Vacuum Valve • Float-type themostatic vent • For medium and large one-pipe vacuum systems • Single non-adjustable port • 1⁄2" NPT female and 3⁄4" NPT male straight shank • Install 6-10" (150-250mm) above horizontal return and 8" (450mm) above the boiler water line • Maximum operating pressure 3 psig (0.2 bar) • Maximum pressure 15 psig (1.
Hoffman Specialty® Vents High Pressure Steam Vent Model 8C Angle Part No. 402002 High Pressure Balanced Pressure Air Valve • Thermostatic vent (no float) • Install at the high point in piping or on equipment to quickly vent air from the steam space. • Discharge may be piped to a safe area or into vented return line.
Hoffman Specialty® Vents Special Steam Vents 1" Model 3 Part No. 401419 Steam Air Line Valve • Thermostatic vent (no float) • For Air Line or Paul Systems • Inlet 1⁄8" NPT, outlet 1⁄4" NPT • Maximum operating pressure 25 psig (1.7 bar)* to vacuum • Maximum pressure 25 psig (1.7 bar) Inlet 2" (51mm) Outlet Steam Air Line Valve Model 3 53/8" (136mm) Steam Unit Heater Air Valve Model 74 21/2" (64mm) Vents Model 74 Part No.
Hoffman Specialty® Vents Radiator Steam Vents Model 1A Part No. 401422 Air Valve (non-vacuum) • Float-type vent • Adjustable port for true proportional venting – 6 port settings from slow (1) to fast (6) • 1⁄8" NPT angle connection • Maximum operating pressure 11⁄2 psig (0.1 bar)* • Maximum pressure 10 psig (0.7 bar) Vents Air Valve Model 1A Model 70A Part No.
Hoffman Specialty® Vents Convector Steam Vents Model 1B Part No. 401425 Air Valve (non-vacuum) • Float-type vent • Adjustable port for true proportional venting – 6 port settings from slow (1) to fast (6) • Telescopic siphon tube • 1⁄4" NPT straight shank • Maximum operating pressure 11⁄2 psig (0.1 bar)* • Maximum pressure 10 psig (0.7 bar) Model 71A Part No. 401470 71B Part No. 401464 71C Part No.
Hoffman Specialty® Vents Water Vents Vents How to Select Water Vents Model Number Radiator 77 78 79 790 791 792 550 508 X X X X X X X X X Mains Built-in Vacuum Check Convector X X X X Maximum Operating Pressure psig (bar) 50 150 75 30 50 250 100 50 (3.5) (10.3) (5.2) (2.1) (3.5) (17.3) (6.9) (3.5) Remarks Small Systems High Pressure Low Pressure Small Systems Small Systems Cast Iron Body Air Chamber Moisture Type Model 77 Part No.
Hoffman Specialty® Vents Model 790 Part No. 401479 Water Vent Valve • For removing air from convectors, baseboard and wall radiation • Safety drain connection for discharging moisture • Fitting and ferrule for 3⁄16" (4.8mm) OD tubing • Telescopic siphon tube • 1⁄8" NPT straight shank • Maximum operating pressure 30 psig (2.1 bar)* • Maximum pressure 30 psig (2.1 bar) 41/4" (108mm) 11/2" (38mm) Water Vent Valve Model 790 47/8" (124mm) 11/2" (38mm) Water Vent Valve Model 791 Model 792 Part No.
Hoffman Specialty® Vents Vents Model 550 Part No. 401476 Air Chamber • For use on convectors which are not provided with built-in air chambers or air collection fittings • Brass construction. • 1⁄4" NPT straight shank connection tapped at the top for 1⁄8" NPT connection • 6 cubic inch (98.3cm) volume • Maximum water pressure 100 psig (6.9 bar) • Maximum steam pressure 25 psig (1.7 bar) Model 508 Part No.
Hoffman Specialty® Valves Drain Valves Model 793 Part No. 401500, 150 psig (10.3 bar) Part No. 401503, 250 psig (17.3 bar) Drain Valve • Automatically removes water from compressed air tanks, air separators and after-coolers • Minimum air loss • 1⁄2" NPT outlet, 1⁄2" NPT side inlet, 3⁄4" NPT top inlet • Cast iron body and cover, stainless steel interior • Maximum pressure 250 psig (17.3 bar) • Maximum hydrostatic pressure 350 psig (24.
Hoffman Specialty® Valves Supply Valves Model 185C Radiator Supply Valve • Suitable for hot water, cold water or steam • Brass / bronze construction • Non-rising stem; packless construction • Available in angle and straight pattern design • Sizes from 1⁄2" to 2" • Maximum working pressure: 150 PSIG • Maximum temperature: 400° F D D C Valves C B A B Angle Pattern Model 185C Dimensional Data (inches) Part Number Style Size 1/2 405099 Angle 3 405102 Angle /4 405105 Angle 1 405108 Angle 1-1/4 405111 An
Hoffman Specialty® Valves Notes _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ ___________
Hoffman Specialty® Y-Strainers Y- Strainers Y-Strainers are designed for steam, oil or water lines. Strainers should be installed ahead of temperature regulating and/or pressure reducing valves and steam traps to protect their moving parts from dirt, this is particularly important for new installations. Screwed NPT End Model 415C • Cast iron body • Maximum pressure: – 250 psig (17.3 bar) for steam service – 400 psig (27.
Hoffman Specialty® Y-Strainers Y- Strainers (continued) Flanged End A Model 450C • Cast iron body • Maximum pressure: 125 psig (8.6 bar) for steam 200 psig (13.8 bar) for water • Available in sizes 21⁄2" - 8" (65-200mm) ANSI STD FLGS D Service Dimensions B C NPT Model 460A, 460B • Cast iron body • Maximum pressure: 250 psig (17.3 bar) for steam 500 psig (35 bar) for water 1 • Available in sizes 2 ⁄2" - 8" (65-200mm) Flanged End Y-Strainer Dimensions, in.
Hoffman Specialty® Y-Strainers Capacities – Water Flow vs Pressure Drop 1 " /2 NPT 10 9 8 7 6 (.7) (.62) (.55) (.48) (.4) 5 (.35) 4 (.28) 3 (.2) 2 (.14) 1.5 (.1) 3 " /4 NPT 1 NPT 11/4" NPT (379) 100 PRESSURE DROP ( P)—POUNDS PER SQUARE INCH (BAR) Screwed End Y-Strainers 11/2" NPT 2" 21/2" 3" NPT NPT NPT Cv 1.0 (.069) .9 (.062) .8 (.055) .7 (.048) .6 (.04) .5 (.035) .4 (.028 ) .3 (.02) .2 (.014) .15 (.
® ® Hoffman Specialty Y-Strainers Hoffman Specialty Vents Notes _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ___________________________
Hoffman Specialty® Selection Guidelines Reference Tables and Formulas Table 1 - Properties of Saturated Steam Selection Guides in Hg Vacuum Pressure psig 25 20 15 10 5 0 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 140 145 100 Temp.
Hoffman Specialty® Selection Guidelines Table 1A - Properties of Saturated Steam (Metric) Absolute Pressure kPa 5 20 30 40 50 60 70 80 90 100 101.3 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 320 340 360 380 400 420 440 460 480 500 Temp.
Hoffman Specialty® Selection Guidelines Reference Tables and Formulas (continued) Table 2 – Weights and Specific Heats of Liquids at 60°F Liquid Fuel Oil (No. 6) Heat Transfer Oil (Light) Mineral Oil Olive Oil Petroleum Oil Water Weight lbs./Gal. Specific Heat BTU per lb. per °F 7.909 to 8.448 8.17 7.67 7.67 6.84 8.337 0.4 to 0.5 0.82 0.65 0.47 0.50 1.00 Steam Flow Requirements for Heating Water Table 3 – Lbs. of Steam Per Hr. to Heat Water Temp.
Hoffman Specialty® Selection Guidelines Table 4 – Physical Properties of Liquid and Gases sp gr 0.885 1.130 1.020 0.891 1.314 1.151 0.813 1.125 1.576 1.659 1.582 1.450 1.464 1.352 0.672 0.858 0.825 0.844 0.715 0.682 0.921 0.842 0.874 0.932 0.958 0.980 0.731 0.668 0.852 0.922 0.898 0.913 0.918 0.922 0.925 0.932 0.937 1.032 1.006 0.952 0.907 1.027 1.033 1.138 0.861 1.646 0.
Hoffman Specialty® Selection Guidelines General Usage Formulas: Heating water with steam Lbs./hr. Condensate = GPM x Temperature Rise ˚F 2 Heating fuel oil with steam Lbs./hr. Condensate = GPM x Temperature Rise ˚F 4 Heating air with steam coils Lbs./hr. Condensate = CFM x Temperature Rise ˚F 900 Radiation conversion Lbs./hr. Condensate = sq. ft. EDR 4 Heating liquids other than water with steam Lbs./hr.
Hoffman Specialty® Selection Guidelines Steam Traps Selecting and Sizing Steam Traps Selecting the proper steam trap is important in effective operation of steam systems. Steam traps are automatic valves that open to pass condensate and close to prevent the flow of steam.
Hoffman Specialty® Selection Guidelines Steam Traps (continued) Selecting and Sizing Steam Traps (continued) Lifting Condensate to Overhead Return Condensate must be lifted in applications where the trap is installed below the return line. Guidelines: – Steam pressure at the trap inlet lifts the condensate. Differential steam pressure across the steam trap of 1 psi (0.07 bar) will lift condensate 2 ft. (0.6 m). – Do not return condensate to an overhead return if modulating control valves are installed.
Hoffman Specialty® Selection Guidelines Steam Trap Selection Guide Chart Steam System Conditions Condensate must be sub-cooled ahead of trap to improve operating efficiency of system Condensate must be completely removed at saturation condition to prevent water hammer Modulating load, wide range of condensate load Constant load Water hammer due to wet returns or lifts Fast air venting required Outdoor location Varying pressure and load where fast response is required Super heat or water hammer F
Hoffman Specialty® Selection Guidelines Steam Traps (continued) Steam Trap Application Guide This application guide is designed to help in the selection of the type of steam trap for the type of application. The choices are based upon common usage. However, the APPLICATION Mains & Tracing Lines Steam Mains to 30 psig (2.1 bar) to 250 psig (17.3 bar) to 600 psig (41.4 bar) Steam Tracing Lines Critical Non-Critical Selection Guides HVAC Heat Exchangers to 20 psig (1.4 to 125 psig (8.6 to 250 psig (17.
Hoffman Specialty® Selection Guidelines Notes _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators Series 2000 Pilot-Operated Regulators consist of a main valve that is controlled by a single or combination of pilot control valves.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators Operation - Main Valve with a Spring or Air Pilot Main Valve with Spring Pilot Spring Pilot Pressure may be controlled by use of either a spring pilot or an air pilot. The only functional difference is that a spring pilot uses a spring to apply loading force to the pilot diaphragm and the air pilot uses air pressure.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Operation - Main valve with a Self Contained Temperature Pilot Temperature Pilot Operation Self-contained temperature control pilots use a liquid-filled bulb and bellows. The actuating force for the pilot results from the volumetric expansion of the liquid as the bulb temperature increases. The expansion or contraction of the liquid controls the position of the pilot seat.
Hoffman Specialty® Selection Guidelines Series 2000 (continued) Operation - Main Valves with Pneumatic Temperature Pilots The air pilot and pneumatic temperature pilot combination is used to control temperature in systems with rapid changes in the required heat load. An air PRV is used to limit the pressure of air supplied to the pneumatic temperature pilot. Limiting this supply pressure limits the air pilot loading force and hence the main valve downstream pressure.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Accuracy of Control—Regulator Steam Capacities Hoffman Specialty Series 2000 Regulator capacities, shown in the flow capacity charts on pages 45 - 48 in the Series 2000 Ordering Information section, are based on test data. The chart data indicates flow capacity values derived from plots of test data that show the drop away (droop) from the set pressure as shown in the graph below.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators (continued) How To Size Series 2000 Main Valves Selecting the proper Series 2000 Pilot-Operated Regulator provides accuracy and efficiency in the control and operation of steam systems and their components. Series 2000 Regulator main valves are controlled by pilot valves.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Sizing Examples Example 1. Conditions: In this example, the steam supply to the process equipment in the installation (system) will be regulated by one Series 2000 pressure regulator. Assume all equipment will be operating at the same time at a constant load.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators (continued) Sizing Examples Example 2. (continued) 3. When the outlet steam pressure is 50% or less of the inlet pressure, use the lowest outlet pressure shown in the capacity table. Answer: 1. Using the above data and referring to the Normal Port Capacity Table page 46, a 1 1⁄4" NPT main valve with a normal port that passes 2880 lbs./hr. (1306 kg/hr.) of steam would be selected.
Hoffman Specialty® Selection Guidelines Series 2000 Pressure and/or Temperature Pilot Operated Steam Regulators (continued) A complete Series 2000 Regulator consists of: – Main valve – Control pilot or combination of pilots – Hardware kit There are a number of types of pilot control valves available: • Series SPS Spring Pressure Control Pilots – for self-contained pressure regulation.
Hoffman Specialty® Selection Guidelines How to Select Series 2000 Pilots (continued) Series 315 PNT Pneumatic Temperature Pilot – For Shop Quality Air 1. Determine the process temperature of the fluid whose temperature is being controlled. 2. Determine bulb material compatible with process fluid. 3. Use Model 315 PNT Pneumatic Temperature Pilot Ordering Information to select model (based on temperature range and bulb material as determined above). 4.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications Typical Series 2000 Pressure Pilot Installation Steam Supply Description: Series 2000 Main Valve and a Spring pilot are used to reduce steam pressure. The maximum pressure drop should not exceed 150 psig (10.3 bar). For longer life of the valve seat and reduced noise level 100 psig (6.9 bar) is the maximum recommended pressure drop.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Typical Series 2000 Combination Pressure-Temperature Pilot to Control Water Heater Exchanger Steam Supply By-Pass Spring and Temperature Pilots Feedback Line Y Strainer F&T Trap Relief Valve 10 Pipe Diameters Hot Water (Discharge) Y Strainer Vacuum Breaker Description: Series 2000 Main Valve used to control temperature of fluid from shell and tube heat exchanger.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Pneumatic Temperature Control on Instantaneous Heater Air Pilot Feedback Line Steam Inlet Pneumatic Temperature Pilot Y Strainer Heated Water Main Valve Air Supply Line Check Valve Instantaneous Heater Cold Water Air PRV Regulator Circulating Pump Heated Water Return Y Strainer Description: Air pilots provide the fastest response to rapid changes in the system temperature.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Automatic Control of Heat Exchanger with High Limit Safety Control Combination: Solenoid Temperature Pilot Spring Pilot Description: Adding a “Normally Closed” Solenoid pilot can provide electrical override. They may be wired into flow switches, aquastats, timers, or manual switches.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Temperature Control for Tank Farm Fuel Oil Storage Thermo Bulb Self-Contained Temperature Pilot Spring Pilot Feed Line Feedback Line Steam Inlet Main Valve Y Strainer To Steam Trap Description: A Series 2000 Main valve with a Self-Contained Temperature pilot and a Spring pressure pilot are used to control the temperature in a oil storage tank.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Instantaneous Heater Domestic Hot Water Heated Water Self-Contained Temperature Pilot Spring Pilot Feed Line Feedback Line Steam Inlet Main Valve Y Strainer Instantaneous Hot Water Heater ThermoBulb Cold Water Vacuum Breaker Heated Water Return Y Strainer Check Valve Circulating Pump F&T Trap Description: Direct acting pilots may be used to control instantaneous heat exchangers when control air is not availab
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Manual System Shut-off For Remote Operation up to 50' (15.2m) with 1/2" NPT For Operation at Regulator Spring Pilot Spring Pilot 1/4" Spring Pilot Gate Valve 1/4" Steam Inlet Steam Inlet Gate Valve Main Valve Steam Inlet 1/4" NPT Line Pilot Inlet Line Main Valve Main Valve Description: A 1/4" NPT Gate valve may be added in the feed line to allow manual shutdown of the Main valve.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Heating Converter Steam to Hydronic Self-Contained Temperature Pilot Spring Pilot Feedback Line Feed Line Description: A Series 2000 Main Valve used with a Self-Contained Temperature Pilot and a Spring Pressure Pilot, provide economical control for steam to water converters.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Typical Two Stage Pressure Regulating Station with By-Pass Steam Supply By-Pass By-Pass Spring Pilot Y Strainer Y Strainer F&T Trap 10 Pipe Diameters F&T Trap 10 Pipe Diameters Main Valve A Y Strainer Relief Valve Spring Pilot Reduced Pressure Main Valve B Y Strainer Description: The maximum pressure reduction for one valve is 150 psig (10.3 bar) although 100 psig (6.9 bar) is recommended.
Hoffman Specialty® Selection Guidelines Series 2000 Typical Applications (continued) Control of Temperature for Storage Tanks Description: A Series 2000 Main Valve may be used to control temperature in a hot water storage tank. For low pressure steam applications use a Self-Contained Temperature pilot. For high pressure steam applications use a Self-Contained Temperature Pilot and a Spring Pressure Pilot.
Hoffman Specialty® Selection Guidelines Series 1140 & 1141 Temperature Regulators How to Size Series 1140 & 1141 Regulators For Steam For Water 1. Use the Selection Data Chart (page 60) to determine the body code required. 1. Use the Selection Data Chart (page 60) to determine the body code required. 2. Determine the capacity required by using the General Usage Formulas and tables (page 104). 2. Determine the capacity required by using the General Usage Formulas and tables (page 104). 3.
Hoffman Specialty® Selection Guidelines Steam and Water Vents Selection Guidelines – Steam Vents Steam vents are used in one-pipe steam heating systems. As such, steam vents are primarily replacement items. Information required for sizing and selection: 1. Type of service Determine the type of service where the vent is to be installed.
Hoffman Specialty® Selection Guidelines Steam and Water Vents (continued) Selection Guidelines – Water Vents Water vents are used in hydronic heating systems and chilled water systems to vent air out of the system. Information required for sizing and selection. 1. Type of service Determine the type of service where the vent is to be installed.
Hoffman Specialty® Glossary of Terms Glossary of Terms The definitions given in this section are only those applying to heating and particularly as used in this catalog. Some do not define the terms for all usages. Absolute Humidity: The weight of water vapor in grains actually contained in one cubic foot of the mixture of air and moisture. Absolute Pressure: The actual pressure above zero. It is the atmospheric pressure added to the gauge pressure. It is expressed as a unit pressure such as Ibs.per sq.
Hoffman Specialty® Glossary of Terms Glossary of Terms (cont’d) Coefficient of Heat Transmission (Over-all)-U-: The amount of heat (BTU) transmitted from air to air in one hour per square foot of the wall, floor, roof, or ceiling for a difference in temperature of one degree Fahrenheit between the air on the inside and outside of the wall, floor, roof, or ceiling. Column Radiator: A type of direct radiator. This radiator has not been sold by manufacturers since 1926.
Hoffman Specialty® Glossary of Terms Glossary of Terms (cont’d) Extended Surface Heating Unit: A heating unit having a relatively large amount of extended surface which may be integral with the core containing the heating medium or assembled over a core, making good thermal contact by pressure, or by being soldered to the core or by both pressure and soldering. An extended surface heating unit is usually placed within an enclosure and functions as a convector.
Hoffman Specialty® Glossary of Terms Glossary of Terms (cont’d) One-Pipe System (Steam): A steam heating system consisting of a main circuit in which the steam and condensate flow in the same pipe. There is one connection to each heating unit which serves as both the supply and the return. Overhead System: Any steam or hot water system in which the supply main is above the heating units.
Hoffman Specialty® Glossary of Terms Glossary of Terms (cont’d) Thermostat: An instrument which responds to changes in temperature and which directly or indirectly controls the room temperature. Thermodisc Trap: A steam trap that operates by the cycling of a free-floating disc. The disc cycles in reaction to the inlet pressure of condensate and air against the bottom of the disc and pressure from flash steam that is trapped between the top of the disc and the trap cap chamber.
Hoffman Specialty® Date Code Information Date Code Information Hoffman Specialty products manufactured after 1972 feature a stamped date code, so you can easily check the life expectancy and recommended replacement intervals. If a product has no date stamp or does not have the Bell & Gossett logo on it – consider replacing it. Below are guides to help you translate the date code on Hoffman Specialty products.
Hoffman Specialty® Selection Guidelines Warranty Policy Return Goods Policy Bell & Gossett warrants for a period of two (2) years from the date of manufacture or one (1) year from date of installation, whichever comes first, that all Bell & Gossett and all Hoffman Specialty products furnished by it are free from defects in materials and workmanship. Unused material may be returned for credit only with the written or oral consent of Bell & Gossett.
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