b. 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.
7. Purge the air from the gas line.
This step applies to non-hazardous gases only.
a. Open the regulator shutoff valve.
b. Open the gas cylinder shutoff valve and flow gas for 10 to 30 seconds.
c. Close the gas cylinder shutoff valve and allow regulator pressure to go to zero.
Connect a Regulator and a Gas Line to a Gas Cylinder
TriStar II 3020 Confirm Installation Instructions and Checklist
302-42870-04 (Rev A) — Sep 2017
4 - 7
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