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RPZ 2½”- 10”

RPZ 2½”- 10”. Modification Overview. Production of the RPZ in sizes 2½ - 10” began in 1993 and is current. Single Access Cover Removal. The RPZ cover is spring loaded and sealed by the diaphragm. ** Hold cover firmly while removing bolts. Single Access Cover Removal.

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RPZ 2½”- 10”

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  1. RPZ2½”- 10”

  2. Modification Overview • Production of the RPZ in sizes 2½ - 10” began in 1993 and is current.

  3. Single Access Cover Removal • The RPZ cover is spring loaded and sealed by the diaphragm. ** Hold cover firmly while removing bolts.

  4. Single Access Cover Removal • Lift cover straight off. • Remove RV stem assembly and spring from body.

  5. Check Valve Removal • Check valve modules. • Modules are o-ring sealed and secured by spring clips. • Pinch together the exposed ends of the clip and pull away from module. ** Use adjustable pliers if necessary.

  6. Check Valve Removal • Once the spring clips are removed, the modules can be pulled straight out of body. • #1 check must be removed before #2 can be removed.

  7. Disassemble Check Valve • 21/2”-3” sizes springs are not captured. • 4”-8” spring tension is captured. • Unscrew check valve stem from disc holder. • Place a wrench on the spring retainer and a wrench on the disc holder.

  8. Disassemble Check Valve • Loctite is used on the threads of the stem and disc holder. • Sometimes an impact or much force is needed to break this free.

  9. Check Disc Replacement • Once check module is disassembled, the disc holder, retainer, and disc are free. • Reassemble in reverse order.

  10. Check Seat Removal • The check seat is part of the module and should not be removed. • If the seat is damaged, the entire module must be replaced.

  11. Check Valve Reassembly Notes • Lubricate o-rings. • Push checks into body. • Replace spring clips in reverse order.

  12. RV Stem Removal • The RV stem and spring are situated between the check valves and are free once the single access cover is removed.

  13. RV Seat Removal • Unless damaged there is no need to remove RV seat. • The seat is pushed firmly into body and is o-ring sealed.

  14. RV Diaphragm Replacement • The diaphragm is located on the upper stem. • Unscrew the RV piston from the stem. • Reassemble in reverse order.

  15. RV Disc Replacement • The RV disc is located on the lower stem. • Unscrew the disc retainer from the RV stem. • Reassemble in reverse order.

  16. RV Reassembly Notes • Center the spring over the RV seat. • Position the RV stem into the body. • Lubricate plunger o-ring.

  17. Single Access Reassembly Notes • Place cover over RV assembly. • Make sure the diaphragm does not block the 3 test cock ports in the body. ** Place lid bolts in cover to help position the diaphragm correctly.

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