6
Customer Service
(704) 841-6000
www
.apolloflowcontrols.com
“Apollo”
Flow Controls
INSTALLATION, OPERATION & MAINTENANCE
MANUAL
B. CHECK MAINTENANCE (CAN BE ACHIEVED WITHOUT REMOVING ENTIRE CHECK.)
If only cleaning of either check is necessary, simply remove the six (6) nuts for 8” valves / eight (8) nuts for 10” & 12” valves on the black plastic
disc retainer (See Figure 8). Remove the check handles and washers and lift the disc retainer and disc out of the body. Rinse the disc with
clean water or replace if necessary. The disc may be flipped over for a temporary repair, but should be replaced if damaged. Replace the disc,
disc retainer, washer, handle, and nuts.
Do not over tighten locknuts.
NOTE: The springs are factory installed and should not be removed or adjusted. Serious injury could occur if springs are disassembled.
FIGURE 6
FIGURE 7
Spring/Seat Sub-Assembly
(first check may remain in valve
body for disc cleaning only)
FIGURE 8
8” - 12” SIZES
IV.
MAINTENANCE INSTRUCTIONS
