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© Copyright 1970-2008 Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 080508001
Kirby Morgan 37 & 57
7.12 SuperFlow 450
Stainless Balanced Regulator
7.12.1 General
The SuperFlow 450 is another high performance
regulator from Kirby Morgan. This is an exception-
ally compact, but high performance regulator.
7.12.1 SuperFlow 450 Demand Regulator Test
for Correct Adjustment, Fully Assembled
To maintain optimum performance of the demand
regulator, it should be checked for proper function
and adjustment prior to commencement of diving
each diving day, in accordance with the KMDSI
Daily Set Up and Functional Checklist. See the Dive
Lab website for the latest checklists at www.divelab.
com.
Check the regulator for adjustment and proper func-
tion with the assembly complete, and supplied with
a breathing gas supply pressure of 135 to 150 p.s.i.g.
NOTE: 135 to 150 p.s.i.g. over ambient is the stan-
dard supply pressure to be used when adjusting all
KMDSI helmets and band-mask equipped with the
SuperFlow 450 regulator.
NOTE: When storing the helmet for any length of
time, ensure that the Flex Knob (190) is turned “out”
fully counterclockwise to avoid stressing the bias
springs. This will prolong the life of both the inlet
valve, seat, and bias spring.
1) Rotate the Flex Knob in, towards the regulator
body, until a clicking can be heard with each revo-
lution of the knob. This is an audible indication the
adjustment spring tension is as tight as it will get.
The adjustment knob will never bottom out or stop
turning in this direction, so listen carefully for this
indicating click.
2) Ensure the supply pressure is connected and prop-
erly adjusted to 135 to 150 p.s.i.g.
3) Turn on the gas supply.
4) Rotate the Flex Knob out counterclockwise slowly,
three full turns.
5) Lightly depress the purge button several times and
ensure the gas flow is stable.
6) Push in gently on the cover of the regulator. There
should be 1/4” free travel in the button before gas flow
starts. When the button is fully depressed, a strong
surge of gas must be heard.
7) If the purge button travels less than 1/4 inch or
greater than 1/4 inch before free flow is heard, the
demand regulator requires internal adjustment, per
this chapter.