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RPZ-II, RPZE-II ½” , ¾” , 1½”

RPZ-II, RPZE-II ½” , ¾” , 1½”. Modification Overview. Production of the RPZ II began in 1996 for the ½” and ¾” sizes. The 1½” size was introduced in 2000. The body is smaller in size than the original version and the parts do not interchange.

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RPZ-II, RPZE-II ½” , ¾” , 1½”

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  1. RPZ-II, RPZE-II½” , ¾” , 1½”

  2. Modification Overview • Production of the RPZ II began in 1996 for the ½” and ¾” sizes. The 1½” size was introduced in 2000. The body is smaller in size than the original version and the parts do not interchange. • The lead free version (RPZE II) was introduced in 2002 and is current.

  3. Single Access Cover Removal • The 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 the body. • Check valves can be removed in any order.

  7. Disassemble Check Valve • Check modules are spring loaded. • Holding the module firmly, unscrew the stem from the disc holder. • Place a wrench on the spring retainer and a wrench on the disc holder.

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

  9. Check Seat Removal • The check seat is part of the module. • If the seat is damaged, the entire module must be replaced.

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

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

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

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

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

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

  16. Single Access Reassembly Notes • Make sure the diaphragm does not block the test cock ports in the body. ** Place lid bolts in cover to help align the diaphragm correctly.

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