919919¾”-2”¾”-2”

Modification OverviewModification Overview

Production began in 2003 and is current.Production began in 2003 and is current.

The lead free (LF) version was introduced The lead free (LF) version was introduced in 2009.in 2009.

Check Cover RemovalCheck Cover Removal

Cover is threaded into Cover is threaded into body and o-ring body and o-ring sealed.sealed.

Cover is spring Cover is spring loaded.loaded.

Check Valve RemovalCheck Valve Removal

Poppet style check Poppet style check assembly.assembly.

The poppet and The poppet and spring are free once spring are free once the cover is removed.the cover is removed.

Check Seat RemovalCheck Seat Removal

The check seat The check seat (cage) is pushed into (cage) is pushed into the body and o-ring the body and o-ring sealed.sealed.

Simply pull the seat Simply pull the seat straight out of the straight out of the body.body.

Check Disc ReplacementCheck Disc Replacement

Remove screw and Remove screw and disc washer from disc washer from poppet.poppet.

Check Valve Reassembly NotesCheck Valve Reassembly Notes

Inspect and clean the Inspect and clean the guide bore on the guide bore on the cover.cover.

The stem must move The stem must move freely in the guide.freely in the guide.

Reassemble in Reassemble in reverse order.reverse order.

RV Cover RemovalRV Cover Removal

Cover is spring Cover is spring loaded.loaded.

RV cover is o-ring RV cover is o-ring sealed.sealed.

While holding cover While holding cover firmly, remove cover firmly, remove cover bolts and rotate the bolts and rotate the cover ¼ turn.cover ¼ turn.

RV Module RemovalRV Module Removal

The RV stem and The RV stem and spring are free once spring are free once the cover is removed.the cover is removed.

RV Seat RemovalRV Seat Removal

The RV seat is o-ring The RV seat is o-ring sealed.sealed.

Simply pull the seat Simply pull the seat straight out of the straight out of the body.body.

RV Stem DisassemblyRV Stem Disassembly

Use a wrench to Use a wrench to gently loosen the RV gently loosen the RV stem assembly.stem assembly.

RV Diaphragm ReplacementRV Diaphragm Replacement

Diaphragm is free Diaphragm is free once stem is once stem is disassembled.disassembled.

The molded step of The molded step of the diaphragm should the diaphragm should point towards the RV point towards the RV stem and disc.stem and disc.

RV Disc ReplacementRV Disc Replacement

The RV disc is free The RV disc is free once the retaining once the retaining screw is removed.screw is removed.

RV Reassembly NotesRV Reassembly Notes

Reassemble in Reassemble in reverse order.reverse order.

Line up the grooves Line up the grooves on the cover with the on the cover with the grooves in the body, grooves in the body, and turn the cover and turn the cover clockwise ¼ turn.clockwise ¼ turn.