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parker refrigeration Clark Johnson Co

Refrigerant Check and Isolation Valves

 

Check Valves- CK-4A

The Type CK4A Check Valves prevent backward flow of fluid in refrigerant suction, hot gas or liquid lines.

  Product Overview

     Specification

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.

 

Markets:

• Industrial Refrigeration

• Commercial Refrigeration

 

Features and Benefits:

• UL Listed (Thru 3” Size)

• May be installed in any position

• Compact

• Lightweight

• Inline

• Design Pressure (MRP): 34.5 bar (500 psi)

 

Applications:

• 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

 

MAXIMUM PRESSURE (BAR)

34.5bar

 

MAXIMUM PRESSURE (PSIG)

500psig

 

MINIMUM WORKING TEMPERATURE (C)

-50°C

 

MINIMUM WORKING TEMPERATURE (F)

-60°F

 

MAXIMUM WORKING TEMPERATURE (C)

105°C

 

MAXIMUM WORKING TEMPERATURE (F)

220°F

 

PRESSURE DROP (BAR)

0.05bar or 0.04bar

 

PRESSURE DROP (PSIG)

0.75psig or 0.60psig

 

OPERATING STYLE

Spring Closing

 

VALVE TYPE

CK4

 

PORT SIZE (MM)

15mm to 80mm

 

PORT SIZE (INCH)

1/2" to 8"

 

FLANGE TYPE

FPT, ODS, Socket Weld, Weld Neck, No Flange

 

CONNECTION SIZE

None or 1/2" to 8"

 

ADAPTER RING

No Adapter Ring or With Male Adapter Ring

 

VALVE MATERIAL

Standard Valve Material or Meets Pressure Equipment Directive (PED)

 

PLATING

No Plating, Zinc Plated, Painted- No Plating

 

BODY MATERIAL

Cast Steel, Cast Steel (A-352 GR, LCB), Ductile Iron (GGG-40.3)

ck4a valve clark johnson co

Clark Johnson Company, Inc.       2016