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Old 10-14-2019, 04:06 AM   #1
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LP Pressure? How to check?

2002 classic AS. How can I check and confirm LP pressure? Stove and furnace work OK but I may not be getting enough LP to run the fridge and HW heater. Sorry about pictures - they appear sideways and upside down.
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Old 10-14-2019, 04:52 AM   #2
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Google manometer. You can build one in 5 minutes for probably less then 5 bucks. Not counting the trip to Home Depot.
If you have a LP port you can check it from there. Just buy a male fitting for the LP port and a 4 feet of clear hose that fits snug on the fitting.
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Old 10-14-2019, 04:54 AM   #3
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I have one in my garage that I built but I’m in Mumbai at the moment or I’d send a picture. You can find plenty of simple examples on YouTube.
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Old 10-14-2019, 06:57 AM   #4
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I bit the bullet and bought one of these proper tools.

https://smile.amazon.com/Yellow-Jack...054053&sr=8-32

Still had to go to HD and get the correct sized brass fitting to connect to stove. Take your reading of 11" of pressure with all other gas appliances operating (furnace, WH, fridge). Mine was several inches low.
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Old 10-14-2019, 08:03 AM   #5
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Considering the age, and looking at your regulator, I wouldn’t bother with checking pressure. I’d replace the regulator and associated flexible lines.

I had to replace the regulator on my 2001 and my 2002.

Al
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Old 10-14-2019, 08:25 AM   #6
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X2^, but I have found brand new regulators which are not adjusted properly right out of the box.
Quote:
Originally Posted by Al and Missy View Post
Considering the age, and looking at your regulator, I wouldnt bother with checking pressure. Id replace the regulator and associated flexible lines.

I had to replace the regulator on my 2001 and my 2002.

Al
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Old 10-14-2019, 08:48 AM   #7
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I had a furnace problem. A mobile RV repair unit came and fixed it. He said the problem was low flow, due to a collapsed interior on the 30 year old flexible line between the regulator and the copper tubing. I agree with Al. Change the lines and the regulator and try it again. Then check pressure if you need to.

The mobile RV service took the furnace out and cleaned and tested and adjusted it on the tail gate of his truck with a propane tank and 12 volt supply. Put it back in the trailer and it did not work. Then he went to work on the regulator and eventually the lines.

I think you need some sort of flow meter to really test. I doubt if the static pressure tells all you need to know.
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Old 10-14-2019, 09:20 AM   #8
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There is a diagnostic strategy for this. If static pressure is ok, likely around 13 - 14 inches, but pressure drops low, like 8 or 9 inches, regardless of adjusting regulator during dynamic flow, there is most likely a line restriction.
A healthy and normal regulator should be at 11" during dynamic flow, with all gas appliances running, and rise to around 13 - 14 when appliances are off. Then shut off supply at the bottles and the lines should hold pressure for a minimum of 20 minutes. (Recalling from memory the 20 minutes. Verify online.)
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Old 10-14-2019, 11:19 AM   #9
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Quote:
Originally Posted by Al and Missy View Post
Considering the age, and looking at your regulator, I wouldnt bother with checking pressure. Id replace the regulator and associated flexible lines.

I had to replace the regulator on my 2001 and my 2002.

Al
I concur. You own an AS, don't cheap out now.
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Old 10-14-2019, 04:25 PM   #10
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Just to provide context, regulated propane is very low pressure, less than 1 psi.

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Old 10-14-2019, 04:49 PM   #11
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Like electricity / batteries .
You need pressure / voltage , and volume / current .
My view is that if I use either of the above , I need to learn about it .

https://gashosesandregulators.com/pr...latorfacts.php
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Old 10-14-2019, 06:14 PM   #12
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Originally Posted by cazual6 View Post
I concur. You own an AS, don't cheap out now.


Thanks Al. I plan to purchase a regulator and the lines. Specifically, which lines do you recommend? Just the flexible ones? Anything I need to know before I swap out the regulator? Im pretty handy - but we all know the little tricks make things easier?
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Old 10-14-2019, 08:20 PM   #13
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I bought 2 propane tanks that came with gauge at Costco. Works great.
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