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Johnson Controls V46 Series V46AT-1

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V46AT-1

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The V46AT-1 from Johnson Controls is a water regulating valve that operates using pressure actuation. This unit is designed for a valve size of 2-1/2 inches and features a direct-acting mechanism that opens as refrigerant pressure increases. It supports a lightweight construction of 29.5 lbs and is fitted with a 4-hole ASME flange for secure connections.

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Technical specifications for V46AT-1

ManufacturerJohnson Controls
Product TypePressure-actuated water regulating valve
Product LineV46 Series
Part NumberV46AT-1
End Connections4-hole ASME flange
Valve Size2-1/2 inches
Control ActionDirect-acting (opens when refrigerant pressure rises)
Service RangeLow Range (for R12 and R134a refrigerants)
Opening Point Pressure Range70 to 170 psig or 483 to 1172 kPa
Modulation Start Point100 to 200 psig or 690 to 1379 kPa
Max. Permissible Refrigerant Pressure230 psig (1586 kPa)
Water Supply Pressure (Max.)150 psig (1034 kPa)
Max. Water Supply Temperature77°C
Body MaterialCast iron with a rust-resistant finish
Disc/Stud/Disc Holder MaterialBrass
Valve Seat MaterialAluminum bronze
Valve Disc MaterialBuna-N
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The Johnson Controls V46AT-1 is a pressure-actuated water regulating valve primarily intended for precise control in refrigeration systems. The device is efficient in handling low range refrigerants, particularly R12 and R134a. The valve measures 2-1/2 inches and demonstrates a direct-acting control action, meaning it will open automatically as the refrigerant pressure increases.

The opening point pressure for this valve varies from 70 to 170 psig, equating to approximately 483 to 1172 kPa. In terms of modulation, the valve initiates operation when refrigerant pressure reaches between 100 and 200 psig, or 690 to 1379 kPa. The V46AT-1 can withstand a maximum permissible refrigerant pressure of 230 psig (1586 kPa) while also supporting a water supply pressure of up to 150 psig (1034 kPa).

Constructed from cast iron featuring a rust-resistant finish, the valve is designed for longevity and durability. The internal components include a brass disc, stud, and disc holder, with the valve seat crafted from aluminum bronze. The disc material is Buna-N, offering resistance to wear and leaking. Additionally, the water supply temperature can reach up to 77°C, making this valve suitable for various operational demands.