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FANs 125, 121

Product/Technical Bulletin V46

Issue Date 1095

Part No. 24-8414-4, Rev. —

Code No. LIT-125687

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

V46 Series Pressure-Actuated Water-Regulating Valves

Features and 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 Interior of valves accessible without removing

valve from refrigeration system or pumping down

❑

Pressure-balanced Design Valve maintains consistent setpoint against both

gradual and sudden water pressure changes

Summary of content (17 pages)

PAGE 1
FANs 125, 121 Product/Technical Bulletin V46 Issue Date 1095 V46 Series Pressure-Actuated Water-Regulating Valves 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.
PAGE 2
A pplication 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. INLET Commercial V46 valves are available in 3/8 in. through 2-1/2 in. sizes.
PAGE 3
Note: d. Subtract the valve opening point from the operating head pressure. This gives the head pressure rise. a. Determine minimum water pressure available from city mains or other sources. 3/8 in. V46DA - Low Flow Flow (GPM) 3. Determine water pressure drop across the valve. This is the pressure actually available to force water through the valve. The maximum differential water pressure across a valve is 60 psi. 2.5 60 2 30 1.5 10 1 0.5 b.
PAGE 4
50 35 40 30 30 25 20 20 10 5 15 10 2 5 0 30 40 50 60 60 50 10 5 2 40 30 20 10 0 10 Head Pressure Rise Above Opening Point (psi) 40 30 10 5 2 20 10 0 40 50 60 120 100 20 80 10 60 5 40 2 20 0 10 Example Flow (GPM) 60 50 20 40 10 5 2 * 20 10 0 20 30 40 Head Pressure Rise Above Opening Point (psi) 30 40 50 60 50 60 2 in. V46 - Low Range 180 60 50 40 30 20 160 140 Flow (GPM) 60 50 40 30 Pressure Drop Across Valve (psi) 1- 1/4 in.
PAGE 5
150 50 40 30 20 100 10 5 2 50 0 10 20 30 40 50 60 Pressure Drop Across Valve (psi) 60 250 60 50 200 Flow (GPM) Flow (GPM) 200 2-1/2 in. V46 - Low Range Pressure Drop Across Valve (psi) 2-1/2 in.
PAGE 6
(A) (E) (G) (D) (H) (C) (F) (B) (I) Figure 5: Flange Type Valves Table 2: 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 11-1/8 5-3/4 9/16 5 1-7/8 2-5/8 1/2 4-29/32 2 in. 6-5/8 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 No. of Holes Hole Size Bolt Circle 1-1/2 in. 4 5/8 3-7/8 2 in.
PAGE 7
Table 4: 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 1 in 5-5/16 7-3/4 4 7/16 3-13/16 1-1/8 2-1/32 1/2 3-5/16 9 4-1/2 1/2 4-1/4 1-1/4 2-5/8 1/2 4 1-1/4 in. 5-5/16 9-11/32 4-11/16 1/2 4-1/2 1-5/8 2-5/8 1/2 4-5/32 1-1/2 in. 5-5/16 10-7/32 5-3/4 1/2 5-1/16 1-7/8 2-5/8 1/2 4 2 in. 6-3/8 14-1/8 6-13/32 1/2 5-9/16 2-3/4 3-1/2 7/16 7-9/32 2-1/2 in.
PAGE 8
M anual Flushing To clear any sediment that might accumulate, valves may be manually flushed. Insert screwdrivers under both sides of the valve spring guide and lift upwards to flush the valve. See Figure 6. Manual flushing does not affect valve adjustment. allowing a single valve to be used for either low or high range refrigerants. c. Is a standard open high, or reverse action close high valve required? See Table 7: Type Number Selection Matrix. d.
PAGE 9
For more information, contact Application Engineering at (414) 274-5535.
PAGE 10
Table 7: Type Number Selection Matrix V46 A Open on Rise, Commercial B Open on Rise, Maritime C Open on Rise, Navy D Open on Rise, Commercial Low Flow E Open on Rise, Commercial with High Pressure Bellows F Open on Rise, Maritime with High Pressure Bellows G Open on Rise, Navy with High Pressure Bellows L Open on Rise, Commercial Low Flow No-Repair N Open on Fall, Commercial P Open on Fall, Maritime Q Open on Fall, Commercial Low Flow with High Pressure Bellows Table 8: Pressure Conne
PAGE 11
Range Adjusting Screw (Turn counterclockwise to raise operation setpoint.) Bracket Shown in Position (1) 2 3 4 A HIGHER B INLET C 9/32 Diameter Holes (2) Range Adjusting Screw 1 Four mounting bracket positions (1-4) are available. Dimensions: in. (mm) Valve Size A B C 3/8 2 (51) 1.25 (32) 1.38 (35) 1/2 2 (52) 1.85 (47) 1.52 (39) Figure 8: Mounting Bracket for 3/8 in. and 1/2 in.
PAGE 12
Table 9: Direct-Acting Commercial Type - Non-corrosive Refrigerants † * ** Product Size (in.) Inlet and Outlet Service Element Shipping Style 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-601R* V46DA-2 3/8 NPT Threaded Extended All Range** 45 2.3 (1.0) STT14A-603R SEP91A-600R and SEC37A-601R* V46AB-1 1/2 NPT Threaded All Range 45 3.3 (1.
PAGE 13
Table 10: Commercial Type - Ammonia † Product Size (in.) Inlet and Outlet Service Element Shipping Style Weight lb (kg) V46AB-11† 1/2 NPT Threaded Ammonia 15 V46AC-8† 3/4 NPT Threaded Ammonia 15 Seat Repair Kit Replacement Power Element 3.2 (1.5) STT15A-602R SEP70A-603R† 4.2 (1.9) STT16A-601R SEP70A-601R V46AD-4† 1 NPT Threaded Ammonia 15 7.7 (3.5) STT17A-609R SEP70A-604R V46AE-4† 1-1/4 NPT Threaded Ammonia 15 9.2 (4.
PAGE 14
Table 12: Maritime Type - Non-corrosive Refrigerants † Product Size (in.) Inlet and Outlet Service Element Shipping Style Weight lb (kg) Seat Repair Kit Replacement Power Element V46BA-2† 3/8 NPT Threaded All Range 34 2.3 (1.0) STT14A-610R SEP13A-602R V46BB-2† 1/2 NPT Threaded All Range 34 3.3 (1.5) STT15A-603R† SEP13A-600R† V46BC-2 3/4 NPT Threaded V46BD-2 1 NPT Threaded All Range 34 4.3 (2.0) STT17A-613R SEP13A-603R All Range 34 9.5 (4.
PAGE 15
Table 14: Pressure Range Specifications Refrigerant Maximum Opening Point psig (kPa)* Modulation Start Point psig (kPa)* Maximum Permissible Pressure psig (kPa) V46A, B, C, D V46N Water Refrigerant All Range R12, R22, R134a, R502, R404a, R507 70 to 260 (483 to 1793) 90 to 280 (621 to 1931) 40 to 100 (276 to 690)** 150 (1034) 320 (2206) All Range with High Overpressure 70 to 260 (483 to 1793) ___________ 150 (1034) 370 (2551) 3/8 in.
PAGE 16
Notes 16 V46 Series Pressure-Actuated Water-Regulating Valves Product/Technical Bulletin
PAGE 17
S pecifications Product Body Material V46 Series Pressure Actuated Valve Commercial: 3/8, 1/2, or 3/4 in.