Pressure test

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    • #277540
      Avatar photoTricia Cusack

        I purchased a building / vacant for 5 years / cold climate / pipes were drained
        I want to perform a pressure test prior to closing on the property. All 1/2 “and 3/4” copper -soldered fittings

        Question 1 – What PSI should I compress to ?

        Question 2 – I’ve been involved in performing this type of test many years ago, but it was on new construction
        and all pipes were capped. — Are standard angle stop valves rated for the PSI I will need to perform the test?

      • #296510
        Avatar photoCincinnatiPlumbing

          Normally when testing waterlines, I pump the system up to 100psi and let it sit for 30 minutes. In an existing structure that already has angle stops installed, I get 3/8″ compression caps and cap off the outlet side of the anglestops then pump the system up to 80psi for 30 minutes. Since normal operating pressure is somewhere between 50-75 psi, 80psi would be a sufficient test. Good luck.

          » This message has been edited by CincinnatiPlumbing on 25 February 2005

        • #296511
          Avatar photoRetired plbg1

            That pressure is OK but get some Liq. soap and water and soap the valves to make sure they are not leaking and anything else.

            Art retired plbg

          • #296512
            Avatar photoCincinnatiPlumbing

              A very good point to make Art

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