About New Home Plumbing Installation: How are water supply and drain systems tested for leaks before use?
Warren S asked:
What tools and techniques are used to test water supply and sewer systems for leaks after rough-in in newly constructed of homes or offices.
When systems don’t hold pressure how are leaks located?
This entry was posted
on Tuesday, March 31st, 2009 at 12:00 am and is filed under Maintenance & Repairs.
You can follow any responses to this entry through the RSS 2.0 feed.
You can leave a response, or trackback from your own site.
What tools and techniques are used to test water supply and sewer systems for leaks after rough-in in newly constructed of homes or offices.
When systems don’t hold pressure how are leaks located?
March 31st, 2009 at 8:50 am
Inspectors require either Water pressurized or Compressed air with a guage (to see if it drops, indicating a leak).
April 1st, 2009 at 12:38 pm
For the drain sys. a plug is placed in the line somewhere near the end of the sys. Then the sys. is filled with water. The time frame differs from place to place & inspector preferance. After the set time if there has not been a significant drop in the water level, it is determined the sys. is water tight.
For the supply side, caps are installed at the end of all the pipe runs with a pressure indicator at the end of the run. Again at the end of a set time if there is no sig. pressure drop the sys. is determined to be water tight.
April 4th, 2009 at 8:25 pm
In our area, the supply lines are simply “charged” with water and checked for leaks. Drain lines are air tested; 5 lbs. for 10 min. You install test balls in each end of the drain and pump them up. I think it varies from town to town.
April 5th, 2009 at 6:30 am
Most drainage piping is tested with “head pressure”. All openings are plugged and the main stack is filled with water to the area specs (usually at least 8′) When the inspector arrives, he watches the level for 5 or 10 minutes for approval. Water supply lines are tested with air and a gauge. Most plumbers are too busy to try to “fix” the tests so the inspector arrives when he is not there and passes or rejects the test. Compressed air is usually used to detect any leaks. I have always set up the test early in the day so I can tell if there is a problem rather than paying to have the system reinspected.
April 7th, 2009 at 1:03 am
they leak water.