One Way Valve
Contents
1.1 One Way Valve
NOTE: The one-way valve assembly should be
disassembled, cleaned and the three O-rings
should be replaced at least annually. Dam-
aged and/or corroded parts should be replaced.
A repair kit is available for replacement parts,
KMDSI Part #525-330.
B
CAUTION
Do not use pliers on the main body of
the one way valve. You may damage
the valve if pliers are used.
Do not use pliers on the main body of
the one way valve
1.1.1 Disassembly Of The One Way Valve
Tools Required:
• Soft Jaw Vise
• 1" Open End Wrench Attachment on Torque
Wrench
(If no vise is available use a backup 1 inch
open end wrench)
To disassemble and inspect the one way valve as-
sembly:
1) The one way valve assembly must be removed
from the side block. Use the open end wrench to
remove it.
2) After the one way valve has been removed, use
two wrenches or hold the hex part of the body in
a soft jaw vise while removing the seat with a
wrench.
B
CAUTION
Use two wrenches or hold the hex part
of the body in a vise while removing
or turning the seat with a wrench. Do
not use pliers on the main body of the
one-way valve. You may damage the
valve if pliers are used.
As the seat is removed, the wiper and the O-ring
slide out in place in a groove on the seat. The
poppet and the poppet O-ring usually come out in
the seat being followed by the spring.
The only functional part remaining in the valve
body is a non-moving, pressed-in cage. The func-
tion of the cage is to contain the poppet during
high gas flows.
B
WARNING
Do not attempt to move or remove the
cage that sits inside the non-return
(one-way) valve. Any attempt to re-
move this part can cause the non-
return valve to fail, which can lead to
serious personal injury or death.
3) Inspect the body interior for foreign matter of
© MMXX Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 200915002
OWV-1
One Way Valve
One Way Valve
