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V46 Pressure-Actuated Water-Regulating Valve Product Bulletin 1

Refer to the QuickLIT Web site for the most up-to-date version of this document.

The V46 pressure-actuated modulating valves come in

two types of control action: direct acting or reverse

acting. Direct-acting V46 valves are typically used for

regulating refrigerant head pressure in water-cooled

condensers. Reverse-acting V46N valves are typically

used for bypass service on refrigeration systems and

heat pump applications.

Commercial V46 valves may be used with standard

non-corrosive refrigerants. V46 models are also

available for ammonia refrigerant. For applications

where the coolant may be corrosive to the valve trim,

maritime models are available, which have nickel

copper (monel) valve trim.

Figure 1: V46 Pressure-Actuated Water-

Regulating Valve

Table 1: Features and Benefits

Features Benefits

No Close Fitting or Sliding Parts in Water

Passages

Provides robust control in less than ideal conditions.

Corrosion Resistant Material for Parts that

Come in Direct Contact with Water

Promotes longer valve life.

Accessible Range Spring Allows easy manual flushing, if required.

Take-apart Construction Allows access to interior of valves without removing the valve from

refrigeration system or pumping down.

Pressure-balanced Design Maintains consistent setpoint against both gradual and sudden water

pressure changes.

V46 Pressure-Actuated Water-Regulating Valve

Product Bulletin

Code No. LIT-125687

Issued August 9, 2010

Supersedes October 1, 1995

Summary of content (15 pages)

PAGE 1
V46 Pressure-Actuated Water-Regulating Valve Product Bulletin Code No. LIT-125687 Issued August 9, 2010 Supersedes October 1, 1995 Refer to the QuickLIT Web site for the most up-to-date version of this document. The V46 pressure-actuated modulating valves come in two types of control action: direct acting or reverse acting. Direct-acting V46 valves are typically used for regulating refrigerant head pressure in water-cooled condensers.
PAGE 2
Application Overview The V46 direct-acting models open on an increase in pressure. Models A, B, and C are typically used for regulating water-cooled condensers, while the low flow D model is generally used in ice machines. The reverse-acting V46N valve model closes on an increase in pressure and is typically used for bypass service on refrigeration systems and heat pumps that control water temperature. Commercial V46 valves are available in 3/8 in. through 2-1/2 in. sizes.
PAGE 3
Valve Sizing Follow Steps 1 through 3, and use the information obtained to locate a point on one of the flowcharts found under V46 Flowcharts that satisfies all three steps. 1. Determine maximum water flow required using tables provided by the manufacturer of the condensing unit, or calculate the flow using the following formula: Figure 4: Flow Equation Note: If the outlet water temperature is unknown, assume it to be 10°F below the condensing temperature.
PAGE 4
V46 Flowcharts The maximum differential water pressure across a valve is 60 psi. Pressure Drop Across Valve (psi) 3/4 in. V46 - All Range 3/8 in. V46DA - Low Flow 1.5 FIG:3_8_DA_LF 0.5 FIG:3_4_V46_AR Pressure Drop Across Valve (psi) 2.5 Figure 9: 3/4 in. V46 All Range Valve Figure 6: 3/8 in. V46 Direct-Acting Low Flow Valve FIG:1_V46_AR Pressure Drop Across Valve (psi) FIG:3_8_V46_AR 3/8 in. V46 - All Range Pressure Drop Across Valve (psi) 1 in. V46 - All Range Figure 10: 1 in.
PAGE 5
Figure 12: 1-1/2 in. V46 All Range Valve Pressure Drop Across Valve (psi) 2-1/2 in. V46 - High Range FIG:2_1_2_V46_HR Pressure Drop Across Valve (psi) FIG:1_1_2_V46_AR 1-1/2 in. V46 - All Range Figure 15: 2-1/2 in. V46 High Range Pressure Drop Across Valve (psi) FIG:2_V46_HR 2 in. V46 - High Range Figure 16: 2-1/2 in. V46 Low Range Figure 13: 2 in. V46 High Range Valve FIG:2_V46_LR Pressure Drop Across Valve (psi) 2 in. V46 - Low Range Figure 14: 2 in.
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Dimensions FIG:V46_thd_dim (D) (A) (F) (C) (E) (B) (G) Figure 17: Threaded Type Valves Table 2: Commercial Service V46 Threaded Connection Dimensions Dimensions in Inches Valve Size 3/8 in. A B D E F G 6-3/4 3-1/8 1-1/2 1-1/4 13/32 3-7/32 3-1/8 (3-1/4) 1 7-13/32 3-3/8 1-27/32 1-1/2 13/32 3-5/8 3-3/8 (3-5/8) 1 7-7/8 3-7/8 2-1/32 1-3/4 13/32 3-21/32 1 in. 4-1/2 (4-7/8) 1 10-3/4 5-1/2 2-25/32 2 1/2 4-3/4 1-1/4 in.
PAGE 7
(A) (E) (G) (D) (H) (C) (B) (F) FIG:V46_flng_dim (I) Figure 18: Flange Type Valves Table 3: Commercial Service: V46 Flange Connection Dimensions Dimensions in Inches Valve Size A B C D E F G H I 1-1/2 in. 5-5/16 2 in. 6-5/8 11-1/8 5-3/4 9/16 5 1-7/8 2-5/8 1/2 4-29/32 13 6-15/32 5/8 6 2-1/4 3-1/2 1/2 6-1/8 2-1/2 in. 6-3/4 13-1/2 6-3/8 3/4 7 2-23/32 3-1/2 1-1/32 6-3/32 Flange Specifications Valve Size Number of Holes Hole Size Bolt Circle 1-1/2 in.
PAGE 8
Table 4: Maritime Service: ASME Flange Connection Dimensions Maritime Service: ASME Flange Specifications Valve Size Number of Holes Hole Size Bolt Circle 1-1/2 in. 4 5/8 3-7/8 2 in. 4 3/4 4-3/4 2-1/2 in. 4 3/4 5-1/2 Table 5: Navy BuShips Service: Navy Flange Connection Dimensions Dimensions in Inches Valve Size A B C D E F G H I 3/4 in. 4-3/16 7-3/4 4 7/16 3-13/16 1-1/8 2-1/32 1/2 3-5/16 1 in. 5-5/16 9 4-1/2 1/2 4-1/4 1-1/4 2-5/8 1/2 4 1-1/4 in.
PAGE 9
Adjustment FIG:V46_mnl_flsh Valves may be adjusted with standard service valve wrenches or screwdrivers; see Table 6. All range valve settings can be changed quickly from low-range refrigerants, such as R134, to high-range refrigerants, such as R22, or from high range refrigerants to lowrange refrigerants. To raise the valve opening point, turn the adjusting screw, located at the top of range spring housing, counterclockwise. See Table 6 and Figure 19.
PAGE 10
3. Companion flange kit by part number, if required. See Companion Flanges and Gaskets. 4. Mounting bracket (3/8 in. and 1/2 in. valve sizes only) if required, and its position on valve. See Mounting Bracket. Companion Flanges and Gaskets Ring Gasket for FIG:flng_kt Kits are available, at additional cost, for 1-1/2, 2, and 2-1/2 in. flange connection (ASME specifications) valves only. Each flange kit contains two ring gaskets, two cast iron flanges, eight machine bolts, and eight hex nuts.
PAGE 11
Options Table 9: Pressure Connection Styles Capillary Tubing Length Commercial Service: Non-corrosive Refrigerant Valve Style No. Description 45 30 in. (762 mm) copper capillary with 1/4 in. flare nut and valve depressor Standard length is 30 in. on valves 1-1/2 in. and smaller. Optional 48 in. (1,219 mm) capillary can be furnished at additional cost, when specified. Mounting Bracket 1-1/2 in. and 51 1/4 in. male flare fitting Smaller 341 30 in. (762 mm) copper capillary with 1/4 in.
PAGE 12
Table 10: Direct-Acting Commercial Type - Non-corrosive Refrigerants Product Size (in.) Inlet and Outlet Service Element Style Shipping Weight lb (kg) Seat Repair Kit Replacement Power Element V46AA-1 3/8 NPT Threaded All Range 45 2.3 (1.0) STT14A-600R SEP91A-600R and SEC37A-601R1 V46DA-2 3/8 NPT Threaded Extended All Range2 45 2.3 (1.0) STT14A-603R SEP91A-600R and SEC37A-601R1 V46AB-1 1/2 NPT Threaded All Range 45 3.3 (1.
PAGE 13
Table 12: Reverse Acting Commercial Type - Non-corrosive Refrigerants Product Size (in.) V46NA-11 3/8 NPT Threaded All Range 45 2.3 (1.0) STT14A-600R SEP91A-600R and SEC37A-601R2 V46NB-11 1/2 NPT Threaded All Range 45 3.6 (1.6) STT15A-602R SEP91A-602R and SEC37A-602R2 V46NB-2 1/2 NPT Threaded Low Range 45 3.6 (1.6) STT15A-602R SEP91A-602R and SEC37A-602R2 V46NC-11 3/4 NPT Threaded All Range 45 4.5 (2.
PAGE 14
Table 14: Navy Type - Non-corrosive Refrigerants Product Size (in.) Inlet and Outlet Service Element Style Shipping Weight lb (kg) Seat Repair Kit Replacement Power Element V46CJ-21 1/2 Sweat Connector All Range 34 3.6 (1.6) STT15A-603R1 SEP13A-600R1 V46CN-21 3/4 4 Hole Navy Flange All Range 34 7.1 (3.2) STT17A-613R SEP13A-603R V46CP-21 1 4 Hole Navy Flange All Range 34 12.0 (5.4) STT17A-611R1 SEP50A-600R V46CQ-21 1-1/4 4 Hole Navy Flange All Range 34 10.3 (4.
PAGE 15
Technical Specifications V46 Pressure-Actuated Water-Regulating Valve Product V46 Series Pressure Actuated Valve Body Material Commercial: 3/8, 1/2, or 3/4 in.