© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318002
37
Kirby Morgan
®
37SS
Chapter 3 - Preparing the Helmet for Diving
B
WARNING
The one way valve must be tested
daily, prior to commencement of div-
ing operations. Failure of the one way
valve could cause serious injury or
death.
1) Prior to attaching the umbilical, close the emergen
-
cy valve knob, attach and pressure up the emergency
hose. Shut off the defogger control knob and screw
in the adjustment knob on the regulator all the way.
2) With the emergency hose pressurized, turn on the
emergency valve knob. If any gas escapes out the end
of the adapter, the one way valve is faulty and must
be rebuilt or replaced. A one way valve repair kit is
available to rebuild these valves (Part # 525-330).
You can also test the one way valve by attempting to suck air
through the valve. The emergency valve must be open for this
test to work properly. If you are able to suck any air through
the valve it is not working properly.
You can test the one way valve by connecting the bailout bottle to the emergency valve and pressurizing the sideblock. There must
be no gas leakage through the one way valve.
