© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130115001
73
SuperLite
®
27
®
bent and could need replacement.
8) Tighten the packing nut with a torque wrench until
moderate resistance is felt when turning the knob.
Torque to 50 inch pounds after seating.
9) Place the spring, and locknut onto the stem secur
-
ing the knob.
10) Tighten the locknut until its top is flush with the
top of the knob. The assembly is now complete and
ready for testing.
NOTE: At this time, with the valve separated from
the side block, testing of the emergency gas valve is
easily accomplished by attaching the valve, by itself,
in the shut position, on to the intermediate whip of
the first stage. Pressurized to a minimum 135 p.s.i.g.
(9.3 bar) using the EGS Cylinder and dropping it into
a bucket of clean water a minimum 30 seconds to
check for leaks.
11) Before installing any pipe sealant, check the fit of
the valve assembly pipe threads to the mating threads
of the side block. There should be 2 turns of hand make
up before needing to use a wrench.
If there is less make up, call your nearest Kirby Morgan
dealer or Dive Lab for advice.
12) Before installing the valve assembly, wrap the pipe
threads with 1½ turns of Teflon
®
tape starting after the
first thread. The amount of tape used should be based
on what is found in the fit check. Apply the tape with
slight tension to allow the tape to fill into the threads.
Use only Teflon
®
tape.
Hand tighten the valve, then continue an additional 1½
to 2 turns with a wrench keeping in mind the proper
alignment of the control knob to the side block. Also,
there should be at least one male thread visible. Check
to be certain the valve is tight by trying to loosen the
fit by hand.
DO NOT TIGHTEN
THE VALVE BODY TIGHTER
THAN NECESSARY! OVER TIGHTENING MAY
OVERSTRESS THE PART AND CAUSE THE PART
TO FAIL.
It is NOT necessary to have the control knob for the
emergency gas supply valve perfectly “square,” i.e., at
a 90 degree angle to the side block. Any angle is ac
-
ceptable provided that 1) the valve handle can be turned
easily and 2) the diver can locate the handle easily.
a) Attach supply whip from the EGS first stage to EGS
helmet valve.
b) Ensure the defogger valve knob is open and the EGS
Valve is shut.
c) 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.
d) Perform the leak check for minimum of five min
-
utes, 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.
7.7 Bent Tube Assembly
7.7.1 General
The bent tube assembly provides breathing gas flow
from the side block assembly to the regulator assem
-
bly. Both ends of the bent tube assembly disconnect
for complete removal. The o-ring and the Teflon
®
o-ring should be replaced during normal overhauls or
any time these components are deemed unserviceable.
These components do not require replacement during
field repairs providing a careful visual inspection does
not reveal wear or damage. All soft goods should be
A leaking Emergency Gas Valve assembly
can cause the diver to exhaust his entire
EGS (bailout) without his knowledge. This
may lead the diver to mistakenly assume
his EGS supply is available when it is
not. This could lead to panic or drowning
in an emergency. Any worn or damaged
components must be replaced.
WARNING
WARNING
Do not use any sealant
on pipe threads on Kirby
Morgan products other
than Teflon
®
tape or other
approved sealants. Other
sealants may not be oxy-
gen compatible and may lead to fire or
explosions which may cause severe per-
sonal injury or death.
