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CKV-7867B/N
Revised 11-04
Catalog Section 55
(00-02-0121)
Diesel Fuel Check Valves
CKV and PRV Series
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Problem Solvers for Diesel Engine
Shutdown Systems
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Precision Made
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Stainless Steel Spring
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Compact and Simple to Install
Description
Murphy offers two types of diesel fuel line
valves: check valves and pressure relief
valves.
The CKV series check valves are in-line,
one-way valves that prevent fuel from being
siphoned back into an injector or injection
pump which could delay a shutdown.
There are two types of check valves:
CKV2336 and CKV1WPS. The CKV2336
has a 1/4 NPT threaded male connection on
each end for connecting to fuel line fittings
or hoses. The CKV1WPS check valve is typi-
cally mounted in the fuel bypass line of the
last fuel injector. The CKV1WPS features a
hollow bolt connection and a barbed, 1/8
NPT connection for flex hose or fitting.
The PRV series pressure relief valves,
relieve overpressure in a fuel system usually
caused by closing of a solenoid fuel valve.
The PRV50 and PRV70 have a 1/4 NPT
threaded connection on each end for con-
necting to fuel line fittings or hoses.
Specifications
Materials
Body Seal Spring
CKV2336 Brass Poppet SS
CKV1WPS Brass SS SS
PRV50/PRV70 Brass SS SS
Note: SS=Stainless steel.
Opening Pressure
Opening Fully Opened
CKV2336 1 psi (7) 4 psi (27)
CKV1WPS 1.4 psi (10) 2 psi (14)
PRV50 17 psi (117) 25 psi (172)
PRV70 10 psi (69) 70 psi (483)
Note: metric (kPa) equivalents in parenthesis.
Static Pressure (all):
150 psi (1.03 MPa) maximum
Weight
CKV2336: 1.3 oz (40.5 grams)
CKV1WPS: 1.3 oz (40.5 grams)
PRV50/PRV70: 1.3 oz (40.5 grams)
Dimensions
CKV2336
1-5/8 in. (41 mm)
1/4 NPT
CKV1WPS
2-1/4 in. (57 mm)
1/8 NPT
Barbs for
flexible hose
21/64 in. (8 mm)
diameter hollow
bolt hole
PRV50 and PRV70
1-1/2 in. (38 mm)
1/4 NPT