Catalina Cylinders recommends the following procedure for the valving of industrial gas cylinders.
- 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 if you feel the cylinder may be contaminated.
- Catalina Cylinders recommends the insertion of a new buna-N o-ring when the old o-ring shows any sign of tearing or wear.
|1.125 – 12 UNF||CGA 580||216|
- Catalina Cylinders has found it easiest to place the o-ring on the valve and then insert the valve into the cylinder tightening the valve hand tight.
- Final tightening of the valve should be done with a calibrated torque wrench to the recommended torque value noted below:
|Thread Designation||Recommended Torque||Maximum Torque|
|1.125 – 12 UNF||40 lbf – ft||50 lbf – ft|
|.750 – 16 UNF||40 lbf – ft||50 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.
Posted in: Industrial