14
IOM-A-Deringer 40/40X/50/50X_6-8
2005
EDP#2916006
© 2020 Watts
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 1, 2 and 3 (A). (Test
cock is closed when wrench flats on stem are perpendicular
to water flow through test cock)
2. Deringer 50/50X: 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 50/50X: Bypass check valve cover is
tightened (F)
• Deringer 50/50X: Bypass meter coupling nuts are
tightened (G)
FLOW
A
A
B
B
C
E
F
G
D
Closed
Closed
Open
Open
