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XS Scuba Valves Service Manual
3. Mount the Valve
A. While you can mount the valve in an empty scuba
cylinder, it is much more effective to mount it in a
built-for-purpose Scuba Valve Tester, p/n TL119.
NOTE: The TL119 Scuba Valve Tester is a
threaded sleeve that mounts to a bench vise. The
sleeve attaches to a scuba cylinder by means of a
high-pressure hose. Insert your valve into the sleeve
for disassembly and reassembly. Once reassembled,
you can pressurize your valve and submerge it into a
bucket of water to conduct leak checks.
4. Remove Outlet O-ring(s)
A. K valve - Using a brass or plastic pick, remove
outlet oring(2).
B. Pro Valve – Using a ¼” hex key, remove the DIN
insert assembly(16) by turning CCW.
i. Using a brass or plastic pick remove the front
and back o-rings(15) from the DIN insert(16).
C. DIN Valve – There is not an outlet o-ring.
5. Remove Safety Handwheel(22)
A. Using the Valve Handwheel Tool, remove the
Safety Handwheel from the valve by turning the
handwheel nut(14) CCW. Locate and identify the
nut(14), spring(13), Safety Handwheel(22), Safety
Handwheel red sleeve and Safety Handwheel green
sleeve(20), and handwheel washer(11).
