TIGHTNESS TEST USING AIR, gas tutorial on carrying out a tightness test and find a leak using air.
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- Опубликовано: 17 ноя 2024
- Derek in this video how to tightness test a gas installation pipe work using air shows us the procedure of tightness testing and also how to find a leak in the pipe work.
Thank-you very much Derek. I always wondered what the 3rd point was on the test T test side. As there are potentially 4 ports including the 3 in the T.
You're definitely a Gem to us all. We're really glad you take your time to make these tutorials. You have definitely helped improve the gas industry 👍.
Nice one
Hi Derek, I always air test my CH pipework with a Rothenberger pressure gauge and attach it using either 22 or 15 mm pushfits, then pump up with a foot pump. If I have done a full installation before the meter is put in, I isolate the boiler, then do the same with the gas line. However, after your video, I'm going to add another test point to my tester which I can use to attach my u-gauge then I can confidently test the whole install at the correct pressure. Always helpful to me (and completely safe) to test with air, as it takes away any risk with gas in the pipe, then, when the meter is installed, do the full tightness/let-by tests. Great video, yet again good to get a helpful tip addition. Thanks.
Hi Derek interesting video just had a thought on doing a video if possible on using a u gauge for testing differential pressure i.e testing for atmospheric + gas pressure, on gas appliances
Thankyou 👍🏻
Really informative and good refresher. An LPG Cooker conversion and set up from Natural Gas would be appreciated.
Coming soon lpg videos 👍🏻
Excellent video. Lpg video would be great. Thanks
Thank you, Nikola Ditsov
great video thanks for your time
Really good video. Very interesting! 🙂
Thanks Derek..
Chris Taylor
Thanks Derek.
Thomas Bradwell
Thanks Derek
Alan would be handy for you to do an update video including air test for pipework 35mm or above 1A 6 minutes etc
Who is Alan 🙄
Yes you can use an aspirator bulb or just use lung pressure and surgical tubing ( just blow into the surgical tubing & pinch). Good isolation valves are key & a ball cock between your apparatus and the fuel runs should be mandatory ( this way we can determine if your apparatus is a piece of junk or not). Also note the temperature of the air used and the surrounding atmosphere temperature should be approximately the same before starting the test. Not sure why you guys in the UK would do it again with gas if the air test was proven good. If it holds with air pressure, it will hold with gas pressure. If you're required to test with natural gas just use a small canister of natural gas with a regulator ( we use our grunsky tanks if we need pure natural gas at any time ).
@@paullbennett2923 on new builds the gas supplier will just leave a disc in the meter outlet and test for tightness then purge it. The carcuss won't even be connected yet anyway. Not till plot finals when the gas gets commissioned.
James and Paul here in the states the procedures can vary from gas utility to gas utility & from state-to-state. I worked as a gas fitter/ first responder for the gas utility in the St. Louis metropolitan area for 35 years. The process here would start with the plumber or pipefitter normally an employee of the plumbing contractor or the mechanical contractor. They would install the piping and pressure test the piping without the gas appliances being connected ( their pressure test maybe 5 to 10 lbs for a low pressure system, 10 to 35 lbs for a 2lb system and anything over a 2lb system would need to be welded pipe with a pressure test certification). After they completed their pressure test with no leaks they could connect the appliances. With all gas appliances ready to fire they would call us in. Upon our arrival we would walk every inch of fuel run and inspect the installation of every gas Appliance. At this time on a residential application (7" delivery) we would pressure test the fuel runs and appliances separately from the gas utility owned equipment. Using a manometer and only a water manometer we would pressure-test the customer's system ( appliance cocks on) pressure testing the fuel runs, appliance connections and the appliances themselves.After a good test of the customer's system we would check the gas company equipment ,also setting the lock up & working pressures of the regulator.At this time we would turn gas on slowly & bleed the air from the system. Once the air is bled from the fuel runs we would fire & test all the gas appliances. After all the physical work is completed then all the pertinent information would be entered into the computer system and any violations would be issued to the contractor on site.(note: this is the procedure we use for residential low pressure delivery only. Commercial and Industrial installations with higher pressures would be a totally different procedure).
another good watch
Hello Derick lpg videos would be great
Coming in the new year 👍🏻
Hi Derek would love to see tightness testing on lpg if possible
Coming soon 👍🏻
Nice one …got lpg on my gas card but never work on it due to a lack of confidence unfortunately so would be really helpful
👍Thank you..
Hi can you do Consider doing tightness test on LPG, thanks
Yep lpg videos coming soon
Interesting. Why would you do this test if you cannot solely rely on it and have to carry out a tightness test with gas after anyway?
Also, you did the test from the ‘carcass’ to the gas meter. What do you mean by the ‘carcass’? 😬 Thanks Derek 👍🏻
Asian Jon. Training.
Carcass is just the gas pipe no appliances and you are only using air to check the carcass before any gas is introduced into the property to make sure you have no leaks
Hi Derek, I carry out gas caps at the beginning of an property to make safe while vacant. I remove and cap off the previous tenants cooker and also cap with discs at the meter. Quite often it’s a credit meter and there is no gas so we introduce air via the meter test nipple and carry out the tightness test with all appliances connected. Am I still not allowed a drop in pressure in this scenario?
You can’t rely on an air test so no gas no test
@@tomkatgastraining even though
I’m capping the gas off anyway? once a new tenant moves in a cp12 is carried out once the debt has been wiped on the meter?
@@onefortheroad1 don’t understand why you are doing an air test the co12 should be carried out when gas is available
Would it be easier if there was a check valve after the manual pump. You wouldn't even need to shut the valve off
Flux can hold a joint at those pressures😱 not that someone should be leaving joints unsoldered etc but if it's not taken fully then testing at those pressures only is not ideal. I would stick a bar in there aswell first.
Lpg vids would be great
Totally agree 👍
Nice one Derek
👍 Sue Warrington
👍Shane hunt
Yes please lpg
Ray Hurrell
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Jon-Paul Ward
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Prepay meter with no credit/replacing a faulty prepay meter...and your lungs.
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✅
steve ward
👍🤓👍
Mustafa akbari
👍Abdi
Mike Fahy
Get some LPG on there's nothing any where !!
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