5
Check Module Disassembly
1. Slowly close inlet and outlet ball valves. Bleed residual pressure by
opening test cocks No. 2, No. 3, and No. 4. Allow the test cocks
to remain open until the reassembling is completed. Test cock No.
1 should remain closed.
2. Remove the cover bolts (item 21) using the appropriate size
wrench.
3. Remove spacer (item 8) by grasping the flanged end of the spacer
and pulling straight up.
4. Remove the inlet check assembly by pulling it in the direction of
flow out from the body bore until it is completely exposed then lift
out of the body.
5. Remove the outlet check assembly by placing the tip of a medium
size flat nose screwdriver in the slot of the seat (item 3) and
prying the check assembly back until the red O-ring (item 3.1) is
exposed. Then, using fingers, pull it out from the body bore until it
is completely exposed then lift out of the body.
Seal Replacement
Both check assemblies are disassembled and reassembled in the
same manner. To service the checks, replace the check modules
with new ones by using check module assembly kits available from
FEBCO. Or, replace the rubber components in the check modules by
using the replacement rubber parts kits available from FEBCO.
1. To disassemble the check module, grasp the seat section (item 3)
in one hand and the guide section (item 7) in the other hand, then
rotate in a counterclockwise direction (approx.
1
⁄
8
turn) until the
two parts disengage.
2. Remove the retaining screw (item 5.2) and disc retainer (item 5.1)
so the rubber disc is fully exposed. Carefully pry out the rubber
disc from the poppet. Be careful not to damage the poppet when
removing the disc. Rinse the poppet in clean water and replace
the old rubber disc with a new rubber disc. If the rubber disc is not
damaged, it can be reversed and reinstalled when a new disc is
unavailable. Rinse all other internal components with clean water.
Replace the disc retainer and secure it with the retaining screw
(item 5.2).
3. Reverse the preceding steps to reassemble the check module.
Be sure to insert the poppet stem into the guide hole and keep
fingers clear of the slots in the module.
