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© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318002
Chapter 7 - Emergency Gas System Valve Assembly
Kirby Morgan
®
37SS
Remember to install the washer before you replace the valve
handle.
Binding (or “hard spots”) in the rotation could be an
indication of a bent stem that must be replaced. Re
-
place the knob and or stem if the fit allows the valve
to rotate loosely more than
1/8
of a turn.
7) Install the spring and locknut. Tighten on the
locknut until it is flush with the knob.
Tighten the nut that holds the handle in place.
8) To test the valve, attach the supply whip from the
EGS first stage to EGS mask valve.
9) Ensure the defogger valve knob is open and the
EGS Valve is shut.
10) Pressurize EGS Valve to a minimum of 135
p.s.i.g. (9.3 bar) using the EGS cylinder as supply.
Allow system pressure to stabilize , and then shut
the EGS supply cylinder valve. Note time and final
stabilized system pressure.
11) Perform the leak check for minimum of five
minutes, using a mild soap solution. Ensure there is
no gas flowing or pressure drop in the system. There
should be no visible signs of external leakage if the
valve is operating properly.
The properly assembled side block with the non-return valve and EGS adapter in position.
