Connect a Regulator and a Gas Line to a Gas Cylinder

  1. Move the gas cylinder close to the analyzer.
  2. Secure the cylinder in place using straps or chains connected to a wall bracket or other fixed surface, or use a cylinder stand.
  3. Use an appropriate cylinder wrench to remove the protective cap from the cylinder by turning the protective cap counterclockwise.
  4. Attach the gas regulator to the connector on the gas cylinder. Hand tighten the nut, then use an appropriate wrench to tighten an additional 3/4 turn.
  5. Check for leaks at the high pressure side of the regulator and in the connector.
    1. Turn the regulator control knob fully counterclockwise.
    2. Slowly open the gas cylinder shutoff valve, then close it.
    3. Observe the pressure on the high pressure gauge.
    4. If pressure drops, repair the leak.
  1. Connect the gas line to the regulator.
    1. Connect the gas line to the regulator connector.

    1. Use two 7/16 in. (11 mm) wrenches to tighten the gas line connection — one to hold the fitting steady and one to tighten the connector nut.

  1. Purge the air from the gas line.
  1. Open the regulator shutoff valve.
  2. Open the gas cylinder shutoff valve and flow gas for 10 to 30 seconds.
  3. Close the gas cylinder shutoff valve and allow regulator pressure to go to zero.

 

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