825Y(YA) 3/4”-2”. Modification Overview Production of the 825Y began in 1978 and is current. The 825YR (1994-2006) had replaceable check seats. **

825Y(YA) 825Y(YA) 3/4”-2”3/4”-2”

Modification OverviewModification Overview Production of the 825Y began in 1978 and is current.Production of the 825Y began in 1978 and is current.

The 825YR (1994-2006) had replaceable check seats.The 825YR (1994-2006) had replaceable check seats.

** In 2006 replaceable seats became standard in the 825Y ** In 2006 replaceable seats became standard in the 825Y and 825YA versions.and 825YA versions.

The 825YA (1989-Current) has angled inlet and outlet valves.The 825YA (1989-Current) has angled inlet and outlet valves.

The 825YS has silicone rubber parts.The 825YS has silicone rubber parts.

A lead free version (LF825Y) was introduced in 2010.A lead free version (LF825Y) was introduced in 2010.

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.

Loosen cover with Loosen cover with wrench, then remove wrench, then remove by hand while holding by hand while holding tightly against spring tightly against spring pressure.pressure.

Check Valve RemovalCheck Valve Removal

Poppet style check Poppet style check valve.valve.

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

Earlier models of the Earlier models of the 825Y do not have 825Y do not have replaceable seats.replaceable seats.

**Current models that start **Current models that start with a “J” serial # have with a “J” serial # have replaceable seats. replaceable seats.

825YR has replaceable 825YR has replaceable seats. seats.

Seats are threaded and Seats are threaded and o-ring sealed.o-ring sealed.

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 bore.bore.

Reassemble in Reassemble in reverse order.reverse order.

RV Cover RemovalRV Cover Removal

RV cover is sealed by RV cover is sealed by the diaphragm.the diaphragm.

Spring load is Spring load is contained.contained.

Carefully remove Carefully remove sensing port bushing.sensing port bushing.

RV Module RemovalRV Module Removal

Module is o-ring Module is o-ring sealed.sealed.

Pull module straight Pull module straight out of body.out of body.

RV Seat RemovalRV Seat Removal

Replaceable RV seats Replaceable RV seats only standard on units only standard on units manufacturer after 1988.manufacturer after 1988.

RV seat is threaded and RV seat is threaded and o-ring sealed.o-ring sealed.

Loosen the allen bolts Loosen the allen bolts and remove RV body.and remove RV body.

Remove discharge shield.Remove discharge shield. Use socket or pliers to Use socket or pliers to

unscrew.unscrew.

RV Seat Replacement NotesRV Seat Replacement Notes

Reassemble in Reassemble in reverse order.reverse order.

Make sure port Make sure port bushings and bushings and discharge shield is in discharge shield is in place.place.

Lubricate o-rings. Lubricate o-rings.

RV Disc ReplacementRV Disc Replacement

Remove screw, disc Remove screw, disc washer, and disc.washer, and disc.

Disassemble RV ModuleDisassemble RV Module

Module is spring Module is spring loaded.loaded.

Hold module firmly Hold module firmly and remove button and remove button screw.screw.

Disassemble RV ModuleDisassemble RV Module

Push the main stem Push the main stem through the guide.through the guide.

Remove the main Remove the main stem o-ring.stem o-ring.

RV Reassembly NotesRV Reassembly Notes

Reassemble in Reassemble in reverse order.reverse order.

Lubricate the guideLubricate the guide

o-ring.o-ring. Push the RV module Push the RV module

straight into body.straight into body.

RV Reassembly NotesRV Reassembly Notes

Make sure sensing Make sure sensing port bushing is in port bushing is in place.place.

Position the Position the diaphragm on the diaphragm on the cover and tighten cover and tighten bolts.bolts.