Brochure

Catalog CIC-2003-1/US
Industrial Refrigeration Products: Check Valves
Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
405
Industrial
Refrigeration
Products
Check Valves
CK4
13-100mm
(½" - 4")
CK1
CK4
125-200mm
(5" - 8")
Specifications
Type CK4A CK4A CK4A CK1 CK1 CK3
Port Size
mm 13 20-100 125-200 20-32 40-150 —
inch ½" ¾" - 4" 5" - 8" ¾"- 1¼"1
5
/8" - 6" ½ - 1 FPT
Seat Material
Stainless Stainless Stainless
PTFE
Metal to
PTFE
Steel Steel Steel Metal
Body Material Steel Ductile Iron Ductile Iron Gray Iron Gray Iron Steel
Design Pressure
bar 34.5 34.5 34.5 20.7 20.7 20.7
(MRP) psi 500 500 500 300 300 300
Fluid Temperature
°C -55° to 105° -55° to 105° -55° to 105° -30° to 105° -30° to 105° -30° to 105°
Limits
°F -60° to 220° -60° to 220° -60° to 220° -25° to 220° -25° to 220° -25° to 220°
Close Coupling to Valve* Yes Yes No Yes Up to 100mm No
Close Coupled Inlet Strainer Yes Yes No Yes Up to 100mm No
Minimum Pressure bar 0.05 0.05 0.05 0.03 0.03 0.34
Drop to Open Wide
psi 0.75 0.75 0.75 0.5 0.5 5
Bulletin for Reference 50-16 50-16 50-20 50-10 50-10 50-13
*Close coupling using male adapter ring to outlet of R/S control valves.
Selection Guide
Type Port Sizes Typical Applications Mounting
CK4 13-200mm 1. Liquid lines Any position
(½" - 8") 2. High speed compressor discharge lines
(Not recommended for slow speed compressor discharge lines)
3. Pump discharge lines
4. Suction lines down to -55°C (-60°F)
5. Hot gas lines from pan to evaporator
6. Defrost relief regulator venting to an imtermediate pressure
7. Prevent receiver pressure from backing up into a cold condenser
8. Prevent liquid returning to compressor during shutdown
9. Prevent liquid from flowing down into drain pan
10. Prevent reverse flow in suction line due to unusual load conditions
CK1 20-150mm 1. Slow speed compressor discharge lines
(¾" - 6") 2. Liquid lines
3. Suction lines down to -30°C (-25°F)
4. Side port applications on screw compressors
CK3 1/2 to 1 FPT 1. Hot gas lines from pan to evaporator Any position
2. Liquid lines
NOTE: Not
recommended
for side port
applications
on screw
compressors
Horizontal lines with
opening stem in the
vertical position
CK3
Overview