Parker Refrigerating Specialties: 1 A4AOS RV ST

Details

The A4A inlet family of regulators are compact, heavy duty, pilot operated, and have remarkable functionality. They sue upstream pressure for the opening force and require a minimum 0.14bar (2psig) pressure drop to open. These valves are normally ordered with close coupled upstream strainers to prevent the entrance of foreign materials into the valve and rest of system. The valve's purpose is to modulate flow of refrigerant gas or liquid to maintain constant upstream pressure as set-for, despite load fluctuations.
Features and Benefits: Pilot operated characterized Modulating Plug for precise control Suitable for all common refrigerants and oil 27.6bar (400psig) design pressure (MRP)

Flanges
threaded or welded steel pipe and copper tube (copper not for ammonia) Interchangeable parts Easy to service Close coupled strainers, optional Many control variations are possible with the use of a few Modules and Kits Stainless Steel Diaphragm Chrome Plated Pilot Seat Manual Opening Stem

Port Size
1"

Pressure Range
PSI 20" Hg to 120 psig

Capacity Range
Full Capacity

Coil Type
No Coil-No Coil Style

Flange Size
4"

Strainer Type
With Strainer

Pressure Set Point
40 psi