understanding natural gas pressure, measured in water colum-instead of PSI.(loudepot) 

Lou, This was one of the best lectures I have ever watched on you tube. You didn't waste time with fluffy bull shit. You got striaight to the point, and showed exactly how measuring natural gas in "water column" units is done. Very Precise, well done & a very accurate presentation that I greatly appreciated and now fully understand why natural gas is not measured in PSI.You DID NOT DO what 90% of people on RU-vid do during tuturials, you DID NOT WASTE my time! VERY WELL DONE LOU, GREAT JOB.

I am a New York City, Department of Education plumber I've been in the business since 1985. I went through various schools of Plumbing instruction over the years. But, the concept of water column was only mentioned and not explained. In studying for a supervisory promotional exam, I noticed a question about gas pressure and inches of water column. I decided to get further instruction. Your video made it so simple to grasp. You took a scientific concept and made it visual both in word and practice. Please keep with these beautiful videos we need fine instructors like you

Great vid. Simple. No jargon. No extraneous BS. The bucket and hose thing is just brilliant. Thank you.

Been a general/remodel contractor, albeit one who always defers to the HVAC people to know their trade (my own business since 2007, years in the trades before then,) but I can finally grasp the basic idea of the water column measurement. Very helpful. Thanks.

It's great when a guy can explain things so we can understand. Thanks so much.

Louis - I have absolutely no reservations or Pride issues in admitting that I am a New Jersey Licensed Master Plumber who...NOW understands Water Column Value as it relates to Gas Pressure just a little bit better than I did a moment ago because of YOUR very clear, succinct, simplistic and easy to understand tutorial. Better still, just as Richard Le commented below, the Bucket Illustration was instrumental in solidifying that understanding. I consider better and thorough Understanding to be Empowering and I fully plan to employ your Visual Aid myself moving forward when trying to inform and enlighten others. As someone who himself strives for clear concise communication always, You Sir ARE, in my humble opinion, an Excellent Instructor and I hope that you will continue to contribute and share your Experience. Thank You.

the bucket example is a fantastic way of physically looking at the pressure units. thank you, Louis.

I found this very helpful! I'm a process operator in a refinery and we have huge heaters that have shutdown limits that are measured by water column.

All these book professors sit behind a desk and watch a whole bunch of videos, makes it sound easy, these guys have never actually been out into the field. Theory makes everything sounds great and easy.

I have worked as a natural gas service man for 38 years and we have always delivered 7'' wc to the customers house piping unless they have a 2lb system which has 2nd stage regulators installed on the house piping to reduce pressure to 7'' wc

Plain English, simple mechanics and excellent examples. Well done, and thank you!

Excellent Video Sir. I am glad you took the time to explain this. I know a lot more now than I did 5 Minutes ago.

You nailed it. Thanks a bunch. That’s what I needed to see. I can figure the rest out for sure. I’ll use a clear water bottle and the gas line. Perfect

Great teacher very easy to understand..Thank you so much for making this video.

Found this when learning automotive evap system testing. Really helped!

Thanks, I was doing some reading and didn't understand what was being said until I saw your video!

Thank you! What you show is so simple and obvious. This method beats the stars out of fooling around making a manometer with a board and tubing. Simply feed your barbecue hose into a bucket of fresh water until it quits bubbling, and measure. No high tech meter can compete for accuracy and no calibration required.

Awesome explanation before I go to school for my gas ticket.

Thank you so much for take time to make this video. I wish you were my instructor when I did my g3…. God bless you…

Thank you very much! You have a good talent to explain/teach.

Great simple & quick explanation of Water Column. Thanks

love how he explains everything simply

Great explanation! Thank you, Lou! 🇨🇦👍😀

Excellent explanation, Thanks Louis!

Thanks for the explanation better than my apprenticeship coach gave me cheers

Thank you for the time to explain that. I understand it much better now. I appreciate it have a good day

Very helpful explanation. Thank you, Sir!

Thank you , a simple video solved some hard to read book problems

Excellent explanation and example, many thanks

What a fantastic explanation, Thank you Sir

Very well explained and understandable. Thank you very much

Great video - really good explanation. Thanks!

excellent excellent explaination. no unnecessary chit chat didn't go on any irrelevant stupid tangents stuck to the point and covered all bases for a basic explaination

Great video. Very informative.

Very informative, Thanks for sharing.

Louis You are the MAN! Thanx a lot.

Thank You For Your Clear Explanation!

Excellent video, thank you!!!

you are a great teacher. love the vids

Great explanation! Thanks!

thanks...what do u think of the reg round meter.....as good as water meter or not.../.bob

Straight to the point... thanks

Do we have an adapter to connect a manometer to check bowel gas?

Thanks for the video lou

Thank you, I now know what water columns means and how to measure!

Excellent; I now understand. thank you.

Great explanation

Amazing explanation

Does water baseboards require a circulating pump and another hot water tank in this system

Very nice! Thank you

Thanks for the explanation.

Great Job

thanks a lot ,,,,,now i understand its less then 1 psig ,,,,,,wow took me long to find this LOL ,,,,,,thanks for sharing

I did some research on line and measured my pressures. - From SoCalGas "Once inside the dwelling unit, a line regulator reduces the natural gas pressure to the traditional 8-inch WC." (US, California) *8-inch WC/.29 psi - "American Meter AC-250, 250 cubic feet/hr., differential pressure .5-inch WC." *7.5-inch WC/.27 psi after meter. Mine measures 7.5-inch WC/.27 psi, which means the input to the meter is 8-inch WC. (US, Michigan) - ICC IFGC 2012, the standard for designing pipe sizing, shows sizing the piping for a maximum of .5-inch WC loss at the appliance connection during operation. *7-inch WC/.252 psi at the appliance regulators while operating. - "Natural gas pressures in the building gas piping between the gas meter and the appliance regulator is typically about 7.5 to 8" wc (about 0.27-0.29 psi) and needs to be at least 0.25 psi to meet the standard appliance regulator minimum to insure unimpaired appliance output." *Which means I must size the piping in compliance with the ICC IFGC piping standard minimums or larger to achieve the minimum pressure required at appliance regulators. We've both proven a lot of equipment will run at less than standard pressures but the only way we can absolve ourselves and transfer the blame to utility is to design for the standard.

In metric they would use millibar?? 8.6 mb is 1/8 of 1 Psi.

Nice job thank you

That's great! Thank you for your knowledge. I'm smarter than I was six minutes ago. Lou, you mentioned a house may have as little as 5" of WC coming into a house. So if my furnace is taking 3.5" I guess there would only be 1.5" left for other things like a hot water heater, stove, or gas dryer correct?

In south and central,eastern Pennsylvania we see 7” normally

Good teacher

Hi Louis - I am designing a Bio Gas Digester (BGD) - it is 1.25 mtr x 1.25 mtr x 2.00 mtr - with a 4 sided pyramid apex measuring 25cm from the top line to the peak - A BGD produces methane gas and 'humus' - I don't know how to calculate what the gas pressure would be inside that tank given those calculations - any ideas ?- PS - thanks for the video -

A million thank you

Now I understand.thanks

Excellent!

Writes Col... uh... fuck it. Thanks!

Thank You Sir.

Simple but i understood the point(s).

god bless you Louis, great videos

Thanks so much!

Dat accent doe. Thank you for the video.

Thank you sir.

Thank you

ABSOLUTELY THE BEST explanation of WC I have ever seen! Made perfect sense. I AM impressed......btw....love the accent! hehe Thanks for your great work on this vid!

thanks you !!

Perfect

I got your bubbles right here

I'm no expert but I'm pretty sure as you use gas, any pressure drop will be compensated for by your regulator, you shouldn't get much any of a drop for your other appliances from the furnace.

1 psi =27.6799048425 inch wc or roughly 28 inch wc :)

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column..(sp) sorry man.. great description though on a almost unknown subject.

That's interesting... So the diameter of the column makes no difference...

Turn on every gas appliance in your house, then do the test, To get a accurate reading .. The gas companies will do it for free....

"Column" is spelled with an "N". You are measuring the height of a column of water, not a "colum."

no

And that why this country should get away from using the English system and get with the rest of the World & use the Metric System! (1/8 of a PSI give me a break, you people must love fractions!) mm of wc or mbar is easier to work with!