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XS Scuba Valves Service Manual
11. Install Outlet O-ring(s)
A. K Valve - Using your thumb or the backside of
a TL136 Multi-purpose tool, install an unlubricated
outlet o-ring(2) into its groove.
B. Pro Valve – Using your thumb or the backside of
a TL136 Multi-purpose tool, install outlet o-rings(15)
into their respective grooves on the front and the
back of the DIN insert(16). Only the back o-ring gets
lubricated.
i. Using a calibrated torque wrench and a
1/4” hex socket adapter, install the DIN insert
assembly CW, applying a torque of 85 lbs*in
(100 kg*cm) (10 N*m).
C. DIN Valve – There is not an outlet o-ring.
Testing
12. Pressurize The Valve
A. Temporarily slide handwheel(22) on to stem(7)
(no spring or nut required) and make sure that the
valve is closed.
B. Pressurize the Scuba Valve Tester to the working
pressure of the valve or install the valve into a
cylinder. Using a 1.5 in. crow’s foot applied to
the valve’s base, torque the valve to 50 lbs*ft
(690 kg*cm) (68 N*m). Pressurize the cylinder to its
working pressure.
C. Apply a proper functioning regulator to the outlet
of the valve.
13. Inspect for Leaks
A. Submerge the valve with regulator attached into a
tub of water.
NOTE: If a tub of water is not readily available,
apply a soap and water solution, or a recognized
leak detection solution such as “Snoop”, to the
bonnet nut area, the inlet neck o-ring area, the
safety assembly area and the outlet area.
Allow soap solution to sit for at least 15 seconds.
B. Slowly open the valve.
C. Remove handwheel from stem.
D. Inspect for leaks around the bonnet nut area, the
inlet neck o-ring area, the safety assembly area
and the outlet area.
E. Remove from water.
F. Temporarily install the handwheel and turn the valve
off until lightly snug.
G. Purge the regulator and remove it.
H. Lower valve back into the water and check to
make sure that there is no leakage from the valve
outlet.
