Kirby Kirby Morgan 37 Inspection of SuperFlow, Demand Regulator Parts, Use silicone sealant

Kirby Morgan 37 & 57

7.7.8 Inspection of SuperFlow 350	nipple knife-edge has nicks or missing chrome, the
Demand Regulator Parts	inlet nipple as well as the soft seat will require replace-
After the regulator has been disassembled, clean and	ment. During annual overhaul the inlet valve soft seat
inspect all parts. Any parts showing signs of wear,	should be replaced.
damage or deterioration should be replaced. If this
is an annual overhaul KMDSI recommends replace-	3) Inlet Valve Soft Seat Replacement: To replace the
ment of the inlet valve seat, adjustment nut, O-ring	soft seat use a small screwdriver or O-ring pick to pry
on inlet valve, O-ring on adjustment shaft, washer	the soft seat from the chrome plated brass valve body.
on the adjustment shaft. A rebuild kit is available for	Using a sewing needle clean all old silicone sealant
replacement parts (Part #525-309).	from the vent hole in the bottom of the cup area, and
	from the cupped area itself. Note: Replace the entire
If any parts show any signs of damage, deterioration	inlet valve if any chrome is missing or if the shaft is
or any damaged threads, the part should be replaced.	bent or thread damage is present.
The adjustment nut must never be reused. Reuse of
the adjustment nut will not allow the regulator to	4) Dab a small amount of silicone adhesive Dow
maintain proper adjustment.	Corning 732 or equivalent on one side of the new
	soft seat then press the seat into the cup area of the
1) Exhaust valve: Ensure the silicone exhaust valve	inlet valve assembly then using a clean cloth, wipe all
shows no signs of damage, brittleness or any defor-	excess silicone from the valve assembly.
mities. The exhaust valve should lay flat against the
seat. If conducting an Annual Overhaul, the exhaust
	WARNING
should be replaced. Ensure the seat spokes that hold
the exhaust valve are smooth, even and not bent.	Use silicone sealant in
Slight bends in the spokes may be removed by pressing	a well ventilated area.
	Do not breathe the
with a thumb. The exhaust valve seating area should	fumes from uncured
be free of dirt and corrosion to ensure the valve can	silicone sealant. These
lay flat and seal properly. NEVER lubricate the valve.	fumes are dangerous
Lubricating the valve can allow dirt to stick to the seat	and can cause uncon-
causing poor performance and wet breathing.	sciousness. They can
	also cause long term damage to body tis-
	sue. Read and follow all precautions listed
	on the silicone sealant tube and Material
	Safety Data Sheet.
	5) Diaphragm: Check to determine if rubber has
	separated from the metal disc. Hold the diaphragm
	to a bright white light, while aggressively pulling and
	stretching to reveal damage, deterioration, or holes.
	Diaphragms showing any indication of damage
	should be replaced. The diaphragm should always be
	replaced during scheduled annual overhauls.
The exhaust valve must be in good condition.	6) Inspect the whisker. Replace the whisker if it shows
2 ) Inlet valve: Check the condition of the rubber seat	signs of wear, aging or any damage.
	The new whiskers used in the Quad Valve™ are
for wear and/or deep grooves. If the red silicone seat
surface is stained to a dark color, this is an indication	much more rugged than the older latex double exhaust
that the air supply being used was dirty,	system and will give a much longer service life and
	provide better breathing performance at depth. Older
Check the condition of the inlet nipple. The inlet	latex double exhaust systems should be replaced with
nipple knife-edge must be in good condition, free of	the new Quad Valve™ exhaust system.
nicks, chipped chrome or any damage. If the inlet

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