Description
The Parker 200770 is the diaphragm kit, Range A for the A2D pressure pilot used on Parker (Refrigerating Specialties) gas powered suction stop valves. The Parker CK-5 is a piston-type, normally open gas powered suction stop valve for low-temperature overfeed and flooded systems; Parker designs it to remain fail-safe if power fails during defrost.
Key specifications
- Part number: 200770 (diaphragm kit, Range A)
- Listed in the A2D pressure pilot section of the CK-5 replacement part kit tables (also CK-6D)
- Parker kit list description: DIAPH KT,A4A RNGA
- A2D diaphragm: stainless steel; diaphragm gasket: Garlock 2930 non-asbestos
- Valve ratings: -60°F to 220°F (-51°C to 104°C), maximum rated pressure 406 psig (28 barg)
- Refrigerants listed by Parker: ammonia, R-22, R-134a, R-404A, R-410A and R-507
Common questions
Is this an A4A or an A2D part?
Parker's PK-16 kit list names this kit for the A4A, and the CK-5, CK-2D and CK-6D bulletins call for the same part number on the A2D pressure pilot. Match the part number in your valve's parts list.
Specifications are based on Parker Refrigerating Specialties Bulletin 50-23 D (CK-5 Gas Powered Suction Stop Valve) and the Parker R/S Parts Kits list PK-16. Confirm fit, ratings and application requirements before ordering.
Disclaimer: The image shown is a general representation of the product category and may not depict the exact part number offered. Actual product appearance, specifications, and configuration may vary.
