© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318002
85
Kirby Morgan
®
37SS
Chapter 7 - Emergency Gas System Valve Assembly
Remove the knob from the valve.
3) Unscrew the bonnet. Its o-ring will come off with
it. The valve stem, o-ring, and washer usually come
out with the bonnet and can be pushed out of the
bonnet once removed from the side block.
Loosen the bonnet on the EGS valve.
4) If the stem remains in the side block body it can
be lifted out after the bonnet is removed.
5) The seat assembly can be unscrewed from the side
block body with the stem or a screwdriver or using
the stem.
Removal of the bonnet, valve stem, and seat.
6) The adapter that provides the breathing gas to the
EGS valve should be periodically removed so the
o-ring can be inspected and lubricated, or replaced
if needed.
Use a toothpick, credit card, or other non-metal objects to
remove the o-rings for cleaning and replacement. Note that
the bonnet on the EGS valve is shorter than the bonnet on the
defogger valve.
