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Catalog CIC-2003-1/US
Industrial Refrigeration Products: Gas Powered Suction Stop Valves
Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
395
Industrial
Refrigeration
Products
Selection Guide
Refrigerant
VALVE MOST RECOMMENDED Listed by Port Size
Refrigerant
Temperature
15mm 20mm 25mm 32mm 40mm 50mm 65mm 75mm 100mm 125mm 150mm 200mm
Application Range ½" ¾"1"1¼"1
5
⁄⁄
⁄⁄
8"2"2½"3"4"5"6" 8"
Above -50°C (-60°F)
Use larger size
CK2 CK2A CK2 CK2 CK2 CK2 CK2 CK2
Suction
Normally Open* CK5 CK5 CK5 CK5 CK5 CK5 CK5 CK5
Above -50°C (-60°F)
Use larger size
➙ ➙ ➙ ➙
S9 S9 S9 S9 S9 S9 S9
Normally Closed*
Recommendations assume no highly viscous oil, dirt, moisture or
foreign substance in refrigerant; also no abnormal shock impact
below -30° C (-25°F).
Common Specifications
Max. Opening Pressure Difference ...... 20.7 bar (300 psig)
Design Pressure (MRP) ...................... 27.6 Bar (400 psig)
Maximum Fluid Temperature ....................... 105°C (220° F)
Coil Insulation ........................ Molded Waterproof Class B
Standard Coil Housing ............................. NEMA 3R and 4
Gas Powered Suction Stop Valves
* Use CK2 only above -30°C (-25°F) if not powered by near oil free hot gas,
such as in rotary screw compressor systems.
S9 Weld End
Body
Very low pressure drop for low temperatures
Ideal for overfeed or flooded systems
Use in Vertical or Horizontal Line
Pilot Connection Contains Disc Strainer between
a Pair of Flanges
Suitable to -50°C (-60°F)
Main valve can lie on its side for minimum
pressure drop with two-phase flow
Manual opening stem
Condenser gas powered piston and heavy return
spring on Type S9 overcome viscous oil conditions
Specifications
Type CK2 CK2 CK5 CK5 S9 S9
Port Size
mm 32 40-150 32 40-150 50-100 125-200
inch 1¼"1
5
8" - 6" 1¼"1
5
8" - 6" 2" - 4" 5" - 8"
Seat Material PTFE Metal PTFE Metal Metal Metal
Body Material
Gray Gray Gray Gray Gray Cast
Iron Iron Iron Iron Iron Steel
Minimum Pressure
bar000000
Drop to Open Wide
psi000000
Minimum Fluid
°C -50° -50° -50° -50° -50° -50°
Temperature
°F -60° -60° -60° -60° -60° -60°
Operation
Normally Normally Normally Normally Normally Normally
Open Open Open Open Closed Closed
Bulletin for Reference 50-12 50-12 50-23 50-23 31-90 30-05
CK2
CK5
Overview