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Old 04-08-2006, 09:13 AM   #1
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Water valve help

Hello all,
I had a check valve to go bad so I took out all my inlet water parts on my 1979 Argosy. I removed the inlet, the water pressure valve, the check valve and all the old copper pipe all the way to the pex line. I need to know what kind of water regulator I should put back in the coach. Most I have found in the camping mags are the small in-line water regulators. The regulator I took out was the house type with the pressure adjuster nut on the top. The smaller in-line regulator would be easier to install in the space but, would it work as well as the larger house type adjuster model? What do you folks suggest? Also I would appreciate your tips for re-installing all this stuff.
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mtnman
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Old 04-08-2006, 09:21 AM   #2
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Quote:
Originally Posted by mtnman
Hello all,
I had a check valve to go bad so I took out all my inlet water parts on my 1979 Argosy. I removed the inlet, the water pressure valve, the check valve and all the old copper pipe all the way to the pex line. I need to know what kind of water regulator I should put back in the coach. Most I have found in the camping mags are the small in-line water regulators. The regulator I took out was the house type with the pressure adjuster nut on the top. The smaller in-line regulator would be easier to install in the space but, would it work as well as the larger house type adjuster model? What do you folks suggest? Also I would appreciate your tips for re-installing all this stuff.
Thanks,
mtnman
Can you put the original one back in? Is it bad?
You might have to go to an RV speciaty store other than camping world to find a suitable new regulator. I found one on e-bay a few years ago and bought it for my Overlander project, but have not seen one for sale since.
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Old 04-08-2006, 11:58 AM   #3
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uwe,
I never looked at the old adjustable pressure valve real close, I just assumed it needed to be replaced along with the worn out check valve. I figured the old pressure valve that came in the coach could be easily replaced with one of equal or better service from HD or lowes. Am I wrong in thinking this? What would be the difference in a new one?
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Old 04-08-2006, 01:42 PM   #4
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How do I check my old regulator?
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Old 04-08-2006, 04:31 PM   #5
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Quote:
Originally Posted by mtnman
uwe,
I never looked at the old adjustable pressure valve real close, I just assumed it needed to be replaced along with the worn out check valve. I figured the old pressure valve that came in the coach could be easily replaced with one of equal or better service from HD or lowes. Am I wrong in thinking this? What would be the difference in a new one?
mtnman
Well size, for one thing. The home style pressure regulators are huge, and are designed for a whole house system. RV pressure regulators are much smaller, designed for smaller input and output threads, so that a sensible installation is easy to do. There might be a flow and volume mismatch from one to the other, but I am not an expert at that.
You do not really need an internal regulator as long as you always use one at the hookup tap outside the trailer.
City water inlets often have the check valve built in. The overpressure valve can be eliminated if it drips with normally regulated water pressure.
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Old 04-08-2006, 04:32 PM   #6
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How do I check my old regulator?
mtnman
Mock up a hose hookup, and connect it to high pressure, and watch what happens at the output.
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Old 04-08-2006, 06:03 PM   #7
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Quote:
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Mock up a hose hookup, and connect it to high pressure, and watch what happens at the output.
OK, I will try that tomorrow.
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Old 04-08-2006, 09:31 PM   #8
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the way to do it is to put a pressure gage on each side of the regulator. This way you can see the difference in pressure. Most of the in-line regulators are preset at 40 psig. Putting a higher pressure on the inlet side and watching the outlet is a pratical way of doing the same job only problem is you may be watching a drop in flow not a drop in pressure.
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Old 04-08-2006, 10:16 PM   #9
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If you use an in-line regulator at the start of the hose connection at the supply spigot you will not need any other regulator. They come factory set at 40-50 psi, or you can buy an adjustable one. This way, you save your hose AND the coach plumbing from excessive pressure.

You might also check into the newer high flow types that give you more volume at the set pressure.
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Old 04-09-2006, 10:27 AM   #10
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40-50 psi would be a plenty for us.
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Old 04-09-2006, 05:52 PM   #11
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OK, it looks like my regulator is fine. I have decided to keep it. The only thing I need to buy is a compression coupler to adapt the PVC to the pex. Store is 20 miles out of the mountains so it may be a couple of days. Every thing else looks good and is all glued together and ready to go into the coach.
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Old 04-12-2006, 06:27 AM   #12
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what is this?

Look at this picture and tell me what the valve in the lower right corner next to the heating duct is for?
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Old 04-12-2006, 07:25 AM   #13
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That's an pressure relief valve. It pops open when the water pressure somehow exceeds a certain value, and releases the pressure through a hose through the floor of the trailer to the outside.
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Old 04-12-2006, 12:41 PM   #14
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I thought that it may be that but was not sure, it looks a lot like a water heater pressure valve. I am not going to put that back in the coach, it was leaking.

I need to know how to turn down the pressure on the water regulator. Do you loosen the lock nut and then turn the valve screw in/right/clockwise or do you loosen the lock nut and turn the valve screw out/left/counterclockwise?
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