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General Plumbing and Gasfitting Talk => Plumbing => Ask Plumbers (Trade) => Topic started by: Enoch on April 24, 2012, 02:20:46 PM

Title: Watertightness tests
Post by: Enoch on April 24, 2012, 02:20:46 PM: Which watertightness tests for plumbing pipework and drains do you prefer and why?
Title: Re: Watertightness tests
Post by: roberto on June 06, 2012, 10:18:16 PM: for pipework i would pressure test to 1500kpa and use water for drainage
Title: Re: Watertightness tests
Post by: TS on June 06, 2012, 10:23:56 PM: 1500kpa for water, because thats what G12/AS1 requires.

Low pressure air test for drainage simply because its quicker than waiting for drains to fill up and its a better indication of a leak.
Title: Re: Watertightness tests
Post by: roberto on June 07, 2012, 08:54:27 PM: how do u know if theres a leak then? do u have a bordon gauge on the pipework?
Title: Re: Watertightness tests
Post by: integrated on June 07, 2012, 10:02:45 PM: Quote from: TS on June 06, 2012, 10:23:56 PM

Low pressure air test for drainage simply because its quicker than waiting for drains to fill up and its a better indication of a leak.

never done this would be interested to know how others may have done it in past

would you not have to seal all openings meaning greater cost for caps etc?
to what pressure is test required? depending maybe compressor required? - more cost?
manometer digital or otherwise?
Title: Re: Watertightness tests
Post by: o2b007 on June 08, 2012, 08:23:24 AM: Havent had to do one in a long time but we used to air test our stacks to 30kpa off memory and just used a manometer to measure it, must say I do perfer drainage test with water mainly because if there is a leak locating it is very quick, but most people perfer how they were taught.