5
IOM-A-Deringer 20/30_2.5-4
2005
EDP#2916002
© 2020 Watts
Deringer 30: Disassembly and Maintenance of Bypass Check Valve
A
C
B
A
D
Part 1
1. Use an adjustable wrench to rotate check cover (A) counterclockwise
to remove.
2. Examine cover plate O-ring (B) for damage or fouling.
3. Remove spring (C).
4. Remove check poppet assembly (D) and examine for damage
or fouling.
5. Examine seat cage, located inside the bypass check valve body,
for damage or fouling to the sealing seat. Do not remove unless the
seat cage is being replaced.
6. Reverse the order of above instructions to reassemble bypass
check Valve.
A
Part 2
1. To replace a damaged red silicone poppet disk, use a
#2 phillips head screwdriver to remove the disk retaining
screw (A).
2. Remove disk retaining washer (B).
3. Use a flathead screwdriver to remove the gasket from
poppet cavity (C).
4. Install new red silicone poppet disk (D).
5. Reverse the order of the above instructions to reassemble
check poppet assembly.
6. Reverse the order of the instructions on the previous page to
reassemble bypass check assembly.
A
A
C
B
D
Disassembly and Maintenance of Bypass Check Valve (continued)
