Forum Title: New Construction Pressure Testing Protocol
A plumber I worked with pressurized the supply system after each phase, capped it and LEFT it pressurized throughout the entire construction process from rough to final. He explained that it helps him monitor the system for damage from other trades, and discourages homeowners from DIY modifications. The plumber my folks are working with pressurizes it for inspections (15 minutes) then immediately releases it. He pointed out that code only requires it to hold 50psi for 15 minutes, to be demonstrated for the inspector. What is typical where you are?
Category: Plumber Post By: MICHELE CHEN (Santa Clara, CA), 02/08/2017

I'm assuming you're talking about gas line, which we test at 15 psi for 15 min or half of you're gauge for 15 min. Water I believe needs to be only tested at 5 psi

- VANESSA CALDWELL (Fort Lee, NJ), 09/21/2017

I muich prefer to leave pressure on the water during construction. I can't begin to count the times that someone has damaged a pipe, which was brought to everyone's attention by the leak they created. I have also had to go back later to find and repair leaks that were caused by damage from other trades, that would have been evident at the time of damage if only there were pressurized water in the system.

- BRENDA YOUNG (San Leandro, CA), 10/01/2017

It is water supply piping. My understanding is water supply is 50 psi, DVW is 5.

- VELMA MCLAUGHLIN (Temple, TX), 10/06/2017

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