Pressure Testing a Gas Line! How to Pressure Test Natural Gas and Propane Lines Correctly!

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Pressure Testing a Gas Line! How to Pressure Test Natural Gas and Propane Lines Correctly!

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8 жыл бұрын

Pressure Testing a Gas Line! How to Pressure Test Natural Gas and Propane Lines Correctly!
These are some of the reasons I use a 6 PSIG Pressure Test for Testing Low-Pressure Natural Gas and Low-Pressure Propane Gas lines per International Fuel Gas Code IFGC. I go over what gases to use to pressure test, how high to pressure test, and why what maximum pressure the gauge should be as well as other tips! Supervision is needed by a licensed HVAC Tech before doing this as Experience and Apprenticeship garners Wisdom and Safety.
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@acservicetechchannel 7 жыл бұрын

Tool List- www.amazon.com/shop/acservicetech Support- www.patreon.com/acservicetech For those that are looking for the tools used in the videos: (Linked Below) Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos- amzn.to/2aenwTq Here is a link to Refrigerant hoses with valves used in the videos- amzn.to/2aBumVI Here is a link to the UEI DL389 Multimeter used in the videos- amzn.to/2av8s3q Here is a link to the Hilmor 4 port Aluminum Manifold Gauge Set- amzn.to/2m4QLik Here is a link to the Digital Refrigerant Scale used in the videos- amzn.to/2b9oXYl Other tool links can be found in the video description section. ACSERVICETECH is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

@2009mechanic 3 жыл бұрын

When I added a detached garage I ran a continuous length of 3/4" copper line buried at 24". I had to flare the ends myself. I got the gas line permit from building indpection office which outlined exactly what they wanted and how it was to be tested. They wanted 25# for so many hours. I ran mine overnight. PRIOR to the test , I installed a 160# gauge and filled it to 150#. I then used the soapy water to check all connections. I found the flared connections leaking. I cranked them tighter and no bubbles anymore at 150#. Then I vented the air and installed a 30# gauge and set the test at 25#. It passed. I figured if it didn't leak at 150# , it wasn't going to at 25# either.

@latourbrian 4 жыл бұрын

Thank you. That was the details I was looking for. I appreciate when people provide the details/reasoning at a high level while referencing the associated codes. Awesome video.

@TheAVguy 2 жыл бұрын

Yes, all right !

@Sam-wj8kw 4 ай бұрын

Running my gas line today! Thank you dude!

@maryannmoran-smyth3453 10 ай бұрын

There’s always something I learned from the professionals, the part that caught me by surprise is not pressuring down your inlet pressure because it’s too much too fast… anyway keep on rocking

@Gameboy_Steve 4 жыл бұрын

Awesome video. We are having a class on gas pressure next week for our installers and techs. And to understand inches of water column. Thank you

@acservicetechchannel 4 жыл бұрын

Awesome, thanks Steven!

@dasboototto 2 жыл бұрын

i use a bicycle pump. No danger of me overpressurizing the line.

@ford4x4460 5 жыл бұрын

Thanks for explaining the temp problem. i kinda suspected that but you confirmed it.

@acservicetechchannel 5 жыл бұрын

No prob, thanks!

@ramonjrap2416 2 ай бұрын

Awesome vid. Great info well said 🫡

@niltomega2978 3 жыл бұрын

Thanks bud. It's obvious why your video is the first one on this subject

@acservicetechchannel 3 жыл бұрын

Thanks a lot Lewis!

@billroe4243 3 жыл бұрын

Our propane company just piped our house and left a 5 lb gauge on with 5 lbs pressure. I noticed next day it had lost about 1 lb and down another lb the following day. I don't believe inspection has happened yet. What is acceptable and safe? Is zero the norm? I don't recall losing any pressure when the underground pipe was tested. I will be speaking to propane company first of the week.

@browngreen933 2 жыл бұрын

Good info. Logically explained. Doing mine tomorrow.

@2point2 3 жыл бұрын

great video.

@acservicetechchannel 3 жыл бұрын

Glad you enjoyed it

@alonso507pty4 Жыл бұрын

Do you leave the line on pressure until the inspector Come out with the new meter?

@stephenu3833 2 жыл бұрын

Thanks. You should do a video on how to hook up and connect the gauge

@21gonza21 3 жыл бұрын

Aside of damaging your check valve with a high psi, I would think that you could potentially cause your joints to leak since the seal is a soft set, could blow off the pipe seal off?

@acservicetechchannel 3 жыл бұрын

There is no check valve except the valve core in the pressure test and this is done without appliances connected. This must be done by code when installing a new gas line in a building. I give the code reasons in the video, thanks!

@wadeconner3200 3 жыл бұрын

Thanks for the great video!

@acservicetechchannel 3 жыл бұрын

Glad you liked it!

@Engineerboy100 4 жыл бұрын

Excellent, thank you very good tips and refresher, clear and concise! thumbs up given :)

@acservicetechchannel 4 жыл бұрын

Thanks Clint!

@alexnunez4019 Жыл бұрын

Great video

@user-bo1bj6xw2p 3 жыл бұрын

That was well explained!! Thanks great video

@acservicetechchannel 3 жыл бұрын

Glad you enjoyed it!

@GreatSeany Жыл бұрын

How can this be done it the system is connected to the gas meter from the utility company? Can you just turn the gas off at the meter? Can the valve on the gas meter handle the PSI?

@philg4116 9 ай бұрын

Nobody talks about the fact that the rate of pressure loss by leakage is a function of the volume of the piping being tested. So if you are adding sections of pipe, testing, adding another etc, just the volume of a 3 ft section of pipe will lose pressure a lot faster than a 25 ft section for the very same leak. If you don't understand that, imagine the pipe is 10,000 miles long starting with 7 psi leaking through a small leak vs a pipe an inch long starting with 7 psi leaking through the same small leak. The 10,000 mile long pipe would take years for the needle to budge. The standards like IFGC are kind of coarse on this point, saying a volume of less than 10 cu ft needs a minimum of a 10 minutes test. But a 3 ft section of say 3/4 iron is much less than 10 cu ft of pipe volume and the apparent pressure loss from these two volumes over ten minutes for the SAME leak will be much different.

@romocon. 5 жыл бұрын

Is good idea to spray soap and water to gage tester some times leaking by the valve and gage treads. That happens to me when I pressure test.

@acservicetechchannel 5 жыл бұрын

Hey Channel settings, you can just go ahead and replace that schrader valve otherwise known as a valve core and it won't leak much. Yes spray non-corrosive leak detector on available joints and valve core, thanks

@Up-hill-Battle Жыл бұрын

So if I used a regular psi gauge, chances are it won’t read any pressure at all from the system? I used a compressor to air the line up and all I get is noise from the regulator outside. Like it’s venting excess air outside.

@ramonjrap2416 2 ай бұрын

Is it normal if pressure drops little by little after 2-3 days

@4bigwheels09 Жыл бұрын

Good video

@Straycurrent 8 жыл бұрын

Excellent training -- thanks for the education.

@acservicetechchannel 8 жыл бұрын

Thank you very much!

@gagemcmahon9485 10 ай бұрын

Spot on mate thanks

@acservicetechchannel 10 ай бұрын

Glad to help

@Santos-ek8md 6 жыл бұрын

Awesome video find. I'm doing, or will be, a leak test of my own. Great coverage on your end. Thanks,

@poopmccully 2 жыл бұрын

So the red knob turn off thing just before the flexible stove line I need to take that off and cap it ?

@charlesmorgan2234 Жыл бұрын

At 4:56 there there is added wording that says the tested line must not be connected to the meter. If you want to test all the way back to the meter does that mean you need to disconnect house plumbing from the meter and then cap off the house plumbing (similar to capping off the feeder lines close to the gas appliances)?

@bartmormino907 Жыл бұрын

Do you ever test the line with the 2lbs regulators installed?

@Klikklikboom0911 2 жыл бұрын

I put air in my gas line and it held for about an hour. How do release the air out of the gas line before I introduce gas? Does it matter? My bbq stub is capped off at the moment. I tried to let air out of the pressure gauge but it only let about 1-2lb of air out

@deloct 8 жыл бұрын

Thanks for sharing. Very helpful.

@acservicetechchannel 8 жыл бұрын

Great to hear, thank you!

@nathanhoover2225 2 жыл бұрын

That attachment from the gas pipe to the pressure tester looks like a 1/2 to 1/4 reducer, but I can't find one with a schrader valve attachment. Do you have a link for it, or do you know what it's called?

@rinorqe 8 жыл бұрын

Great video...Can you please make a video about what are the most common parts that a technician should keep in a truck!

@acservicetechchannel 8 жыл бұрын

That is a good video idea. Thank you and glad you enjoyed the video.

@americaksushantkinazarse5747 2 жыл бұрын

Do we have to turn off the shut off valve before doing the pressure test?

@hoseacrumpleriv5784 2 жыл бұрын

I'm having a problem where when the water heater and furnace are running, I have 3 psi at the pressure gauge. As soon as I turn off the gas at the meter and close all of the shutoff valves to the appliances, the pressure drops to less than 1 psi. I attempt to pressurize it with a compressor and no change in pressure is seen. I'm about to do the soapy spray water method today. But is it correct to shut off the valve at the incoming gas meter and close the valves for the pressure test or am I missing something?

@jimmyung3212 7 жыл бұрын

Thank you, I learn a lot from you.

@acservicetechchannel 7 жыл бұрын

Thanks jimmy ung!

@bretcj7 6 жыл бұрын

Can I go from 1/2” gas pipe to 3/4” pipe after the gas manifold to run it outside and not have a noticeable drop in pressure or flow?

@acservicetechchannel 6 жыл бұрын

It all depends on length and turns. I would only run it in the same or a smaller size after a main trunk or manifold but that is only if my manifold would support the extra btu's. Here is a video on gas line sizing, thanks- kzfaq.info/get/bejne/g79jZKudscrSZIE.html

@jackfortunati9453 3 жыл бұрын

In the year 2020, is the code still 6 psig or have they increased it to 10? The lasted search results show a 2018 code book. Also: if you accidentally inflate to 20 psi will you blow out the pipe sealant?

@waynemiles7027 7 жыл бұрын

Can a home owner or hvac contractor secure the main gas shut off valve at the meter if minor repairs are needed inside the house. All repairs will be checked for leaks. Thanks.

@acservicetechchannel 7 жыл бұрын

Yes at the customer side which is usually the right, not the stub side from the ground. Thanks!

@whitesheatingairappliancer7101 8 жыл бұрын

thank you for your video.

@acservicetechchannel 8 жыл бұрын

Glad to help!

@mark.r8900 5 жыл бұрын

Hi, say I just added a gas line for my fireplace. I have two shutoff valves. One at the fireplace and the other at furnace room where I teed off. So I would just shut off the two valves and ONLY pressure test the new line correct? Or do I have to do the whole house? Thank you.

@acservicetechchannel 5 жыл бұрын

You can't valve off and then pressure test. The line cannot be connected to the appliance but just near it. Then add the pressure test to the other end of the branch. The whole house does not need to be tested but just the new branch. After the pressure test holds and inspection, release the pressure and connect the branch to the main and the appliance, thanks

@mark.r8900 5 жыл бұрын

thank you for your reply. so on the appliance side i would just cap the new line off (without connecting to appliance). then on the other end of the new line in the furnace room i would just connect my test dial (without connecting to the main) and put in pressure. so basically, i am just adding pressure to the new line ONLY with nothing connecting to it (not appliance or main gas line). is this correct? thank you.

@acservicetechchannel 5 жыл бұрын

Yes, that is what it states in the IFGC 2018 and then you leak test with non corrosive bubble leak detector afterward at the connection points to the appliance and to the main. Have you seen this video on the inlet gas pressure and making sure to not pressure test with an appliance connected, thanks- kzfaq.info/get/bejne/adaZadh4tbbOc6M.html

@b_rad5678 3 жыл бұрын

Getting ready to test for gas logs. I have a manual shut off in fireplace. If I cap the shutoff and open valve, that should be alright for my test, right?

@adrianugalde5633 3 жыл бұрын

Do you pressure test with regulators on?

@carolinem.9800 3 жыл бұрын

A fewUnscrupulous plumbers overpressurize to 30 psi to test yr gas line -- then claim a homeowner needs $5000 of gas pipe replacement since they ‘found a leak’ ...( which they themselves created especially on old threaded black pipe unions or tees , by using wrong 30 psi test pressure.. not 4 or 6 psi. .) always get a second opinion from a certified master plumber before agreeing to pay for gas line replacement.

@robertficek7586 3 жыл бұрын

It depends on the code, some call for a min 15psi for 15 min for pipe up to 2", 60 min if its more then 200 feet, some code calls for no more then 300% working pressure. Black iron fittings should be rated #150 so at min 150psi. If it leaks at 30psi, its still leaking at 5psi and 0.25 psi. Its easier to find a small leak at 30psi, nothing harmful to pressurize a system to 30 psi. Unfortunately it is difficult to find a trades to certify a pipe system with any leak as there is no "acceptable leak rate" in any code. The trades are put in an awkward position where there is a small insignificant leak thats probably existed for decades without notice or issue and if they touch the system such as install water heater they are now responsible. With that said, some trades would rather replace the system then spend hours trying to find a tiny leak, its easier and less risk to quote pipe replacement then guess the hours needed to hunt for a leak. Like you said just have to get multiple quotes. $5k sounds excessive for 1-2days work and $100 worth of pipe

@tredogzs Жыл бұрын

140 psi one hour

@hudgypudgy2960 Ай бұрын

Uneducated comment

@am44_67 3 жыл бұрын

We pump to 10 here in California at my company

@galenson1 6 жыл бұрын

Could you please explain why you cannot use a manual valve in the closed position at the end of the line? Thanks!

@acservicetechchannel 6 жыл бұрын

They leak and if you read on the side, they only are rated for holding back 1/2 psi, thanks

@TheNimshew 7 жыл бұрын

Man! Do I love to see the pressure go up! But 6 psi? Wow! UPC used to be 15 psi. Then they lowered it to 10 psi.

@acservicetechchannel 7 жыл бұрын

Hey Richard, that is for low pressure 5-8"wc nat gas and 11-13"wc Lp on a 30Lb pressure test and follows the 3 guidelines spelled out in IFGC 2015, thanks

@porfiriocruz2616 5 жыл бұрын

Yes you are right 10 psi for 15 minutes.

@socksincrocks4421 3 жыл бұрын

I pressure test to 80 psi, isolated at both ends.

@carolinem.9800 3 жыл бұрын

Doesnt that hi a test pressure blow the friction joints in old black pipe? Our m o pr is 4 psi for testing for leaks in n g appliance supply piping.

@neilwilliams8608 7 жыл бұрын

Thank you for your informative video. What do you do when you "check everything" and you still have a leak, small or large? How can I find a gas leak if it is underground(just dirt and grass) Thanks again

@acservicetechchannel 7 жыл бұрын

If you really can't find it then you should take a section off and just test that section only. If it is underground, it souds like a replacement, thanks!

@chriscolburn2871 3 жыл бұрын

Could this be done using a hand pump as well??

@acservicetechchannel 3 жыл бұрын

yes

@artissonbeats3057 Ай бұрын

Psig @60

@tiberiumsunwars1487 4 жыл бұрын

how much pressure does the gas meter put out to a 3 bedroom house? because I would want to test at that pressure so I know its going to hold.

@acservicetechchannel 4 жыл бұрын

Low pressure nat gas is roughly 1/4 of a psi and we disconnect from any appliance if we were running a pressure test so they dont break.

@PaulCotterCanada 3 жыл бұрын

Sorry to bother you. Can you tell me where to buy (or the name to search for) the widget that connects the NPT gas pipe to the meter and pressure hose

@michaelguido7505 3 жыл бұрын

Its 3/4 gas pipe nipple. To gauge to hose.

@PaulCotterCanada 3 жыл бұрын

@@michaelguido7505 Thank you

@basketballjones6782 10 ай бұрын

The only difference between a professional and an amateur: The professional gets paid to do it.

@jimbola77 8 жыл бұрын

super video can I use a uei manometer electronic? thank you for sharing partner!!!!1

@acservicetechchannel 8 жыл бұрын

You can use the UEI Electronic Manometer for checking the actual nat gas or propane pressure coming into the appliance but you would use a gauge that is tightened onto the actual gas line for pressure testing when the gas line is not attached to any incoming regulators, meter, or supplying appliances. All of the branch ends would be capped during a pressure test to 6psig. Glad you enjoyed it!

@tonyrodriguez9014 7 жыл бұрын

If you use an electric model please be sure that it is properly calibrated prior to use.

@boby115 3 жыл бұрын

Tony, you are absolutely correct. I've been in the natural gas utility industry for over 35 years and all of our electronic equipment has to be calibrated once a month. You will most likely never see a gas utility use a electronic manometer because of a calibration issues. In Court depositions the water manometer is absolute & the plaintiff's attorney can never question that one for calibration. So that being said there should always be 2 pressure test one with the gauge as shown in the video and one with a U tube manometer after all the equipment is reconnected ( lower operating pressure test will prove all the Appliance Connections, whether any gas control are passing, any gas cocks are passing & prove the complete gas system). You're kidding yourself if you're relying on only one pressure test. I've been involved with too many depositions when contractors only rely on the main piping pressure test.

@RodPaletta 7 жыл бұрын

finally someone that knows what they are talking about...it is scary these guys using compressors and putting 30-50 psi into the system.

@acservicetechchannel 7 жыл бұрын

Ha ha thank you Rod Paletta! There is lot of misinformation out there.

@TheNimshew 7 жыл бұрын

And why not put 50 psi in a gas line? Because the velocity of the air rushing out a leak can carry debris into the hole, sealing it temporarily. 2 years later, the now rusted chip has fallen away and , voila"! Boom.

@DONALD1951 5 жыл бұрын

It will actually cause a leak

@ryanmullins715 2 жыл бұрын

We take the gas line loose at all appliances and cap them off then we can do a real test with up to 30 psi, 6 is not enough imo

@ericyoung4087 Жыл бұрын

Should never use galvanized pipe on gas lines. The coating will flake off and clog all the ports.

@harryl7946 2 жыл бұрын

Say “alright” just one more time!!!!!!!!

@340rps 4 жыл бұрын

Our town inspector requires a 5lb guage only, nothing higher. We have propane which is normal about 10lb. ..go figure.

@acservicetechchannel 4 жыл бұрын

He requires, it is not the code that requires. Also do you mean 10-14" wc not psi. In residential, it is just a little less than 1/2 a psi. 27.6" WC for 1 psi