11
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
3.3 Maintenance: RV-2
Figure 6: RV-2 Maintenance Diagram
1.
Isolate and depressurize the RV-2 from the supply source.
2.
Remove the RV-2 from the supply.
3.
Using a hex key, remove the spring adjuster, spring, and poppet.
4.
Inspect the spring. If the spring is in good condition, it can be reused.
5.
Inspect the poppet for nicks and scratches. Replace as necessary.
6.
Unscrew the base from the spring housing, and then replace the O-ring on the base.
7.
Remove and replace the O-ring in the base side of the spring housing.
This small O-ring may be picked out, or a small burst of air may be blown through the opposite end of the spring housing to
release the seal.
DO NOT lubricate the O-ring on which the poppet seals (
Figure 6, #1
).
8.
Screw the base into the spring housing.
9.
Return the poppet and spring to the spring housing.
Ensure that the poppet is returned to the spring housing in the correct orientation.
10.
Screw the spring adjuster into the spring housing.
11.
The RV-2 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.
