13
IOM-033
MODELS: RV-1, RV-2, RV-2CP, and RV-3
REV: F
13839 West Bellfort Street, Sugar Land, TX 77498
welker.com
Service Department 281.491.2331
3.5 Maintenance: RV-3
Figure 8: RV-3 Maintenance Diagram
1.
Isolate and depressurize the RV-3 from the supply source.
2.
Remove the RV-3 from the supply.
3.
Using a large screwdriver, unscrew the spring adjuster. This will remove the spring adjuster, spring, and poppet
assembly from the body.
4.
Inspect the spring. If the spring is in good condition, it can be reused.
5.
Unscrew the poppet pin from the poppet body.
6.
Inspect the poppet for nicks and scratches. Replace as necessary.
7.
Unscrew the poppet pin from the poppet body, and then replace the O-ring in the poppet body.
DO NOT lubricate the O-ring on which the poppet body seals (
Figure 8, #1
).
8.
Screw the poppet pin into the poppet body.
9.
Return the poppet assembly and spring to the spring housing.
Ensure that the poppet assembly is returned to the spring housing in the correct orientation.
10.
Screw the spring adjuster into the spring housing.
11.
The RV-3 is now ready to be reset and reinstalled. See
Section 2.2, Setting and Installing the Relief: RV-1, RV-2, and RV-3,
for instructions on setting and installing the relief.
