Specifications, Applications,
Service Instructions & Parts
HCK4 IN-LINE CHECK VALVES
5/8” THRU 4” PORT
(16 mm THRU 100 mm)
Bulletin C401e
JUL 2006
Flanged
3/8” thru 4”
(10 mm thru 100 mm)
FPT, SW, WN, ODS
for refrigerants
HCK4-4 Check Valve
INTRODUCTION
The HCK4 series of dependable, compact, rugged
in-line check valves (disc type non-return valves) is
ideally suited for refrigerant flow control applications.
Valves open wide for flow in the arrow direction on the
valve body. Valves close quickly and reliably when
flow reversals occur.
Plated bodies and stainless steel seat discs and
springs enable them to withstand expected industrial
refrigeration conditions. Furthermore, these check
valves can be mounted in any position and close-
coupled to other valves.
ADVANTAGES
These compact check valves offer reliable operation
regardless of position. Corrosion resistant stainless
steel seat disc. Metal-to-metal seats facilitate durable,
tight closing of valves.
APPLICATIONS
These in-line check valves are designed to provide
refrigerant flow control to hot gas lines, liquid lines,
compressor discharge lines, suction lines, and hot
gas heated drain pans.
These valves are not recommended for use with
pulsating loads such as low speed compressor
discharge and screw compressor side port applications.
For applications such as these, use Hansen HCK1
piston type check valves.
KEY FEATURES
ADDITIONAL FEATURES
Mounts in any position
Less than 1 psid wide opening pressure
Can be close-coupled
Low bubble leakage tolerance
For Ammonia, R22, R134a, CO2 and other approved
refrigerants
U.L. Listed
STAINLESS STEEL SEAT DISC
LAPPED METAL SEATING
CLOSING SPRING
DUAL BODY/CARTRIDGE SEALS
