CLA-VAL RP-2 Manuel utilisateur

Model RP-2

¾” - 1 ½”

Product Overview

Model RP-2 (1978 - 2003) Utilized poppet

style checks and a CDHS-20 relief valve.

Replacement hardware parts were

discontinued in 2005. Only repair kits with

rubber parts are available.

Check Cover Removal

The check covers are

secured by 4 cap

screws and sealed by

an o-ring.

The covers are spring

loaded.

Check Valve Removal

Poppet style checks.

Once the cover is

removed the poppet

and spring are free.

Green Spring

indicates first check.

Orange spring

indicates second

check.

Check Seat Service

Check seats are o-ring sealed

and threaded into the body.

Replacement seats are no

longer in production.

Very fine nicks on the seating

edge can be restored by slowly

working 400 wet or dry

sandpaper on the beveled

edge of the seat.

Check Disc Replacement

Hold the disc retainer

in one hand and with

an allen wrench,

unscrew the stem

from the disc retainer.

Replace the disc as

necessary.

Check Valve Reassembly Notes

Inspect and clean the

guide bore on the

cover.

The stem must move

freely in the guide

bore.

Reassemble in

reverse order.

Relief Valve Cover Removal

The CDHS-20 RV has two

covers. The bellofram cover (item

3) and the intermediate body or

“diaphragm cover” (item 2).

The bellofram cover (item 3) is

located on top of the RV

assembly.

The bellofram cover is secured

by screws and sealed by the

bellofram.

There is no spring load on this

cover.

Relief Valve Cover Removal

The intermediate body (item 2) is

secured by cap screws and

sealed by the diaphragm.

There is a slight spring load on

this cover, so exert pressure

downward on the cover as the

cap screws are removed.

The RV stem assembly is

mounted through the

intermediate body.

The RV spring is free once cover

is removed.

Disassemble RV Stem

•The stem is secured by the

upper and lower stem nuts

(item 16).

•Remove the upper stem nut

first.

•The bellofram, piston and

retainer can now be removed

from the upper stem.

•Remove the stem along with

the diaphragm and disc from

the body.

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