The CK-6D is a suction stop valve for hot gas defrost applications. This normally open valve features dual solenoids for equalization and a pressure regulator to prevent the valve from opening during defrost in the event of a power loss.
The CK-6D operation is based upon the same principle as the R/S CK-5 gas powered stop valve, with the added feature of an internal vent function, allowing for equalizing after defrost through one valve. This heavy duty gas-powered valve is suitable for ammonia and other refrigerants, certain oils and other fluids approved for use in refrigeration. The CK-6D is a pilot operated, dual-position valve. This valve is equipped with a manual opening stem and A2D pressure pilot. The CK-6D is a normally open valve during refrigeration, with both pilot solenoids de-energized. This valve's position will remain unchanged during refrigeration (opened) should power be interrupted to the pilot solenoids during this mode. During defrost, both solenoids are energized which will close the main valve. Should a power failure occur while an evaporator is in defrost, the valve is designed to re-position itself to its internal vent mode. This will slowly bleed the coil pressure down to the suction line pressure. This eliminates the prospect of a "suction shock" condition in the event of a power failure. The Type CK-6D Gas-Powered Valve is furnished with FPT Internal NPT (U.S. Standard Taper Pipe Thread), Socket Weld, Weld Neck or ODS (solders over copper tubing of given diameter) connections. The valve may be easily removed from between the flanges to make servicing a breeze.
• Industrial Refrigeration
• Commercial Refrigeration
Features and Benefits:
• Economical Solution to Evaporator Equalization after Defrost
• Low Pressure Drop
• Heavy Return Spring
• Manual Opening Stem
• Integrated S6B pilot solenoids
• Standard Coil Housing Meets NEMA 3R and 4 - Rain Tight
• Normally Open
• Maximum Rated Pressure (MRP): 27.6 bar (400 psig)
• Low temperature evaporators
• Hot Gas Defrost
MINIMUM WORKING TEMPERATURE (C)
MINIMUM WORKING TEMPERATURE (F)
MAXIMUM WORKING TEMPERATURE (C)
MAXIMUM WORKING TEMPERATURE (F)
MAXIMUM PRESSURE (BAR)
27.6bar or 28bar
MAXIMUM PRESSURE (PSIG)
400psig or 406psig
PORT SIZE (MM)
40mm to 100mm
PORT SIZE (INCH)
1-5/8" to 4"
S6A or S6B
PILOT FLANGE TYPE
FPT or Socket Weld
PILOT CONNECTION SIZE (INCH)
3/8" to 3/4"
Socket Weld, Weld Neck, No Flange
None or 1-1/2"to 4"
Please Configure Part for Coil Type Specification
Without Strainer or With Strainer
Standard Valve Material or Meets Pressure equipment Directive (PED)