NV C-21G Industrial Piping Practice Questions - Nevada C-21G Industrial Piping Contractor Examination Exam

A roll-grooved or cut-grooved mechanical coupling on C-21G industrial water or process pipe is acceptable only when:

Any farm-irrigation clamp is painted to match the pipe The groove dimensions, coupling, and gasket are listed for that pipe, pressure, temperature, and fluid The groove is cut by eye and sealed with pipe dope The coupling is used to pull a 3-inch offset into line

Correct Answer:

The groove dimensions, coupling, and gasket are listed for that pipe, pressure, temperature, and fluid

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