The Type CK1 Check Valves prevent backward flow of fluid in refrigerant suction, hot gas or liquid lines.
Parker’s CK1 check valves provide safe and effective backflow prevention for a variety of refrigeration applications. The gravity closing feature makes these valves ideal for systems that use a VFD or compressor unloading feature to reduce capacity as they can tolerate load fluctuations better than alternative check valve technologies. All CK1 check valves are flanged and have a manual opening stem for manual operation. The 20-32 mm (3/4 – 1-1/4”) port size valves have a PTFE seat; larger valves have a metal to metal seat. A minimum pressure difference of .03 bar (0.5 psi) is required to open the valve.
Markets:
• Industrial Refrigeration
• Commercial Refrigeration
Features and Benefits:
• Manual Opening Stem
• Low Pressure Drop
• Piston Type Gravity Closing
• Flanged
• Design Pressure (MRP): 27.6 bar (400 psig)
• Rugged; Heavy Duty
Applications:
• Compressor Discharge Lines
• Liquid Lines with temperatures as low as -30°C (-25°F)
• Suction Lines with temperatures as low as -30°C (-25°F)
MAXIMUM RATED PRESSURE (BAR)
27.6bar
MAXIMUM RATED PRESSURE (PSIG)
400psig
VALVE TYPE
CK1 or CKS
PORT SIZE (MM)
20mm to 150mm
PORT SIZE (INCH)
3/4″ to 6″
CONNECTION TYPE
FPT, Socket Weld, No Flange, Weld Neck, ODS
CONNECTION SIZE
None or 3/4″ to 6″
STRAINER TYPE
No Strainer or Strainer
ADAPTER RING
No Adapter Ring or Male Adapter Ring
VALVE MATERIAL
Standard Valve or Meets Pressure Equipment Directive (PED)
PLATING
No Plating
PISTON TYPE
Standard or .109 Piston
