10
IOM-A-Deringer 20/20X/30/30X
2020-05
EDP2916001
© 2020 Watts
Installing Access Port Cover
1. It is best to never remove the access port O-ring (A). Should the access port
O-ring (A) become dislodged, simply insert it back into access port groove (B).
2. Slide the access port cover (C) into place being certain that access port O-ring
(A) does not become dislodged during the process.
3. Insert tapered washers (E), flat side facing up, and cover bolts (D) into tapered
cover holes (F). tapered washers (E) must be properly installed or the access
port cover (C) will not seal under pressure.
4. Use
15
/
16
" socket wrench (G) to tighten the
4
center cover bolts (D) alternating
from one side of the valve to the other. Then tighten the
4
corner bolts
alternating from one side of the valve to the other.
A
B
F
C
E
G
D
Close Test Cocks and Double Check All Closing/Sealing Mechanisms
1. Using the Deringer test cock wrench or a small adjustable
wrench close main test cocks number 2, 3, and 4 (A). (Test
cock is closed when wrench flats on stem are perpendicular
to water flow through test cock).
2. Deringer 30/30X: Using a #2 flathead screwdriver close
bypass test cock number 1 and 2 (B). (Test cock is closed
when screwdriver slot on stem is perpendicular to water flow
through test cock).
3. Use the “T” handles to open bypass ball valve number 1 (D)
and then open bypass ball valve number 2 (C). (Ball valve is
open when “T” handle is parallel to water flow through
ball valve).
4. Double check to be certain of the following:
• All cover bolts are tightened (E)
• Deringer 30/30X: Bypass check valve cover is
tightened (F)
• Deringer 30/30X: Bypass meter coupling nuts
are tightened (G)
FLOW
A
A
B
B
C
E
F
G
D
Open
Open
Closed
Closed
