CKV-7867B/N
Revised 11-04
Catalog Section 55
(00-02-0121)
Diesel Fuel Check Valves
CKV and PRV Series
■
Problem Solvers for Diesel Engine
Shutdown Systems
■
Precision Made
■
Stainless Steel Spring
■
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
