Catalina Cylinders recommends the
following procedure for the valving of oxygen cylinders.
- Verify that the cylinder was
manufactured for oxygen service. Cylinders which have been
manufactured for oxygen service by Catalina Cylinders will have an "O"
with a "2" inside the "O" stamped on the crown of the cylinder.
- Inspect the inlet and outlet
threads of the valve and the threads and o-ring gland of the cylinder
for damage to the threads and o-ring area. If either the valve or
cylinder has damage to the threads or the o-ring area, do not insert
the valve into the cylinder.
- Inspect the cylinder threads and
the cylinder internally verifying that the cylinder is free from any
lubricants and contaminants. Do not proceed it you feel the cylinder
may be contaminated.
- Catalina Cylinders recommends the
insertion of a new teflon o-ring every time the valve of a cylinder is
removed and to be re-installed. Verify that the teflon o-ring is free
of lubricants and damage.
- Catalina Cylinders has found it
easiest to place the teflon o-ring in the o-ring gland of the cylinder
and then insert the valve into cylinder tightening the valve hand
tight.
- Final tightening should be done
with a calibrated torque wrench to the recommended torque of 75
lbf-ft.
- Close the valve with no more than 1
lbf-ft torque.
- Do not tamper with the safety
device of the valve. The safety device of the valve should be rated at
the test pressure of the cylinder.
- Whenever replacing the safety
device of a valve, Catalina Cylinders recommends that you always
replace the safety device with a complete new safety device assembly.
- Always verify that the cylinder is
empty prior to attempting to replace the safety device of a valve.
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