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Check Valves - CK-4A
Brand: Parker HannifinThe Type CK4A Check Valves prevent backward flow of fluid in refrigerant suction, hot gas or liquid lines.
Parker’s CK4 check valves are designed to be close coupled to a control valve which will reduce overall installation length, complexity, and cost.
These valves are designed to prevent backflow in a variety of refrigeration applications and can be mounted on a valve or as a standalone component.
The CK4 can be mounted in any orientation when used as a standalone part of the refrigeration system.
These compact valves are spring closing with a lapped, stainless steel or chrome plated seat for positive closing action and low leakage.
A minimum pressure difference of 0.05 bar (0.75 psi) is required to hold the valve in the open position.
Removable seat plate with combination O-ring and metal to metal knife edge seal allows the valve to be disassembled for maintenance.
They may be ordered with male adapter rings for close-coupling to other Refrigerating Specialties valves.
Features- UL Listed (Thru 3” Size)
- May be installed in any position
- Compact
- Lightweight
- Inline
- Design Pressure (MRP): 34.5 bar (500 psi)
Specifications
Brand
Adapter Ring
- No Adapter Ring or with Male Adapter Ring
Body Material
- Cast Steel, Cast Steel (A-352 GR, LCB), Ductile Iron (GGG-40.3)
Connection Size
- None or 1/2" to 8"
Flange Type
- FPT, ODS, Socket Weld, Weld Neck, No Flange
Maximum Pressure (bar)
- 34.5 bar
Maximum Pressure (psig)
- 500 psig
Maximum Working Temperature (°C)
- 105° C
Maximum Working Temperature (°F)
- 220° F
Minimum Working Temperature (°C)
- -50° C
Minimum Working Temperature (°F)
- -60° F
Model Number
- Please Configure Part for Model Number
Operating Style
- Spring Closing
Plating
- No Plating, Zinc-Plated, Painted- No Plating
Port Size (inch)
- 1/2" to 8"
Port Size (mm)
- 15 mm to 80 mm
Pressure Drop (bar)
- 0.05 bar or 0.04 bar
Pressure Drop (psig)
- 0.75 psig or 0.60 psig
Valve Material
- Standard Valve Material or Meets Pressure Equipment Directive (PED)
Valve Type
- CK4
- Re-circulating (overfeed) systems
- High speed compressor discharge
- Pump discharge
- Suction temperatures down to -45°C (-50°F)
- Hot gas lines (pan to evaporator)
- Not suitable for discharge of reciprocating compressor or economizer port of screw compressor