CLVC water line joints below ground and under a house or building shall be tested to at least _____ psi

CLVC water line joints below ground and under a house or building shall be tested to at least _____ psi

• A. 50 psi
• B. 80 psi
• C. 100 psi
• D. 125 psi

Answer: (C)

When testing buried water line joints, you use a hydrostatic test at a specified pressure to verify the joints are watertight. For CLVC joints located below ground or under a building, the minimum test pressure is 100 psi. This pressure provides enough margin above typical home operating pressure (often 40–80 psi) to reveal leaks, while staying within what the piping system and fittings can safely endure during the test. Pressures lower than this may not expose weak joints, while higher pressures, though acceptable, aren’t required by the standard minimum.

When testing buried water line joints, you use a hydrostatic test at a specified pressure to verify the joints are watertight. For CLVC joints located below ground or under a building, the minimum test pressure is 100 psi. This pressure provides enough margin above typical home operating pressure (often 40–80 psi) to reveal leaks, while staying within what the piping system and fittings can safely endure during the test. Pressures lower than this may not expose weak joints, while higher pressures, though acceptable, aren’t required by the standard minimum.