Concealed joints in fuel gas piping systems can be made up of unions, tubing fittings, running threads, or right and left couplings.

Name: Concealed joints in fuel gas piping systems can be made up of unions, tubing fittings, running threads, or right and left couplings.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Concealed joints in fuel gas piping systems should not be made using unions, tubing fittings, running threads, or right and left couplings as these are not considered safe or appropriate for concealed installations.

Concealed Joints in Fuel Gas Piping Systems Can Be Made