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Tweco Single & Two Stage Regulators User Manual

Page 14

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9. Slowly and carefully open the cylinder valve (Figure 4) until the

maximum pressure shows on the high pressure gauge.

Figure 4: Open Cylinder Valve

10. On all cylinders, except acetylene, open the valve completely to

seal the valve packing. On gaugeless regulators, the indicator

will register the cylinder contents only.

11. On acetylene cylinders, open the valve 3/4 of a turn and no

more than 1-1/2.

WARNING

Acetylene delivery pressure must not exceed 15 PSIG (103 kPa)

or 30 PSIG (207 kPa). Acetylene can dissociate (decompose

with explosive violence) above these pressure limits.

CAUTION

Keep the cylinder valve wrench, if one is required, on the

cylinder valve to turn off the cylinder quickly, if necessary.

12. Attach the desired downstream equipment.