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XS Scuba Valves Service Manual
6. Install Stem Washer(9)
A. Install the stem washer(9) on to the stem(7).
7. Insert Stem(7) into the Bonnet(10)
A. Insert the stem(7), with its o-ring(8) and stem
washer(9), shaft first, into the bonnet(10).
8. Insert Bonnet Assembly
A. Insert bonnet assembly into the valve body,
insuring that the slot in the stem(7) engages the tang
on the seat assembly(5). Tighten bonnet nut(10) by
hand.
9. Torque Bonnet Nut(10)
A. Using a calibrated torque wrench, tighten the
bonnet nut(10) to 33 lbs*ft (460 kg*cm) (45 N*m).
WARNING: Failure to provide proper torque
on the bonnet nut could lead to the bonnet
nut backing out, which in turn could lead to a
catastrophic loss of cylinder contents.
10. Install Safety Assembly(1)
A. Thread a new Safety Assembly into place by
hand.
B. Use a 3/8th in. socket on a calibrated torque
wrench to torque the Safety Assembly(1) to
100 lbs*in (115 kg*cm) (11 N*m).
WARNING: If a safety assembly is loosened
or removed from the valve, it must get replaced. A
safety assembly, which uses a copper sealing gasket,
is designed to be tightened just one time only.
