4IOM-A-Deringer 20G/30G_2.5-4 2005 EDP#2916003 © 2020 Watts
Removing Access Port Cover Plate
B
C
A
A
1. Using a 5/8" socket wrench loosen all
eight bolts on the access port cover
plate (A).
2. Remove bolts (A) and store in a safe
place. If lost, tapered bolts must be
replaced with like Deringer cover
bolts and cannot be substituted with
standard bolts.
3. Remove access port cover plate (B).
Do not remove access port O-ring (C).
Removing the First Dual-actionTM Check Module
FLOW
C
1. Use a torx 45 bit or key to loosen the check retainer
bolts on both sides of the valve body (A). Do not com-
pletely remove check retainer bolts from valve body.
Loosen the bolts until the ends of the bolts are flush
with the inner wall of the valve body (B). This allows
easy removal of check modules
2. Insert a flathead screwdriver between the inner valve
body and the first check module flange (C), gently
move the first check module in the downstream
direction until the first check module can easily be
removed from the access port by hand.
B
NOTICE
There are several different versions of the check retaining bolts.
Make sure you use the proper tool for the different types. (torx,
hex, allen)
A
Removing the Second Dual-action Check Module
FLOW
C
A
1. Remove 1st check prior to removing 2nd check as
described above.
2. Use a torx 45 bit or key to loosen the check retainer
bolts on both side of the valve body (A). Do not
completely remove check retainer bolts from valve
body. Loosen the bolts until the ends of the bolts are
flush with the inner wall of the valve body (B).
3. Insert a flathead screwdriver between the inner valve
body and the second check module flange (C),
gently push the second check module in the upstream
direction until the second check module can easily be
removed from the access port by hand.
B
A
NOTICE
There are several different versions of the check retaining bolts.
Make sure you use the proper tool for the different types. (torx,
hex, allen)
