In piping terminology, what does 'Grooves' refer to?

• A. Cut or rolled on pipe for fitting compatibility
• B. A type of pipe groove
• C. A standard for pipe flanges
• D. A name for CPVC fittings

Answer: (A)

Grooves are recesses cut or rolled into the ends of pipe to accept grooved fittings. This feature creates a standardized interface that allows mechanical couplings to clamp around the groove, sealing with a gasket and enabling quick, secure assembly. In a grooved sprinkler system, the pipe ends are prepared with these grooves so the matching grooved couplings can attach the sections together reliably. It’s not a type of groove by itself, not a flange standard, and not a CPVC fitting name—the term specifically describes the pipe-end modification that makes fitting compatibility possible.