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Old 05-15-2013, 02:25 PM   #1
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Water pressure?

OK,

So I have a few questions about water pressure. My old trailer was a tent trailer and used a regulator that you connected between the trailer and the city water.

So with our new trailer I only assume you use the same regulator to avoid high pressure issues. Is this correct?

But this last weekend trip it seems the water pressure was lower than desired in the sinks and shower. Should I expect normal pressure or volume of water from the faucets?
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Old 05-15-2013, 02:47 PM   #2
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Newer trailers with better pipes and fittings will tolerate higher pressures, but there is a limit ; that should be in your manual. Different parks have different water pressure, even can vary within the park . Best to have an adjustable regulator with a gauge attached , for consistant flow in your unit, one size fits all regulators don't always provide this .
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Old 05-15-2013, 02:50 PM   #3
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Watts (lowes/home depot) and Valterra (camping world) are good ones.
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Old 05-15-2013, 03:21 PM   #4
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The small ones that screw onto the faucet restrict water flow more than they reduce pressure. The Watts adjustable, with a gauge is the best I've found to do the job correctly.
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Old 05-15-2013, 03:51 PM   #5
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There has been a lot of misinformation put out on regulators. The cheapies (the $9.99) have been labeled flow restrictors and not regulators, but this is not true. They come in a 40 to 50 psi model and a higher flow 50 to 60 psi model. Both models have a spring and piston inside. This holds the pressure at the preset level. The nicer regulators with the gauge and adjuster allow you to set your own pressure. You should never go over about 60 psi according to most coach manufacturers. Of course the regulator will not increase line pressure. If you have 35 psi coming in you will only get 35 psi in the coach. If you had low pressure at the park, that could be your problem. Also some campers have whole house filters that cut down on flow.
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Old 05-15-2013, 03:54 PM   #6
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The cheapies may regulate pressure, but the little hole the water comes thru does restrict volume.
Many threads on this.
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Old 05-15-2013, 04:17 PM   #7
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Quote:
Originally Posted by CampDaven
The cheapies may regulate pressure, but the little hole the water comes thru does restrict volume.
Many threads on this.
Yep and Bingo.

Turn on a hose. Stick your thumb in the end. Do it right - no water at all. Do it 95% closed - Pressure up, Volume down. Start your stop watch - fill a bucket both ways. I'm in the Valterra adjustable camp. Use something - cause if you happen to run into one of those places with 100 psi you'll be glad you did. Low pressure is frustrating. Plumbing is expensive. Just sayin'.
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Old 05-15-2013, 06:01 PM   #8
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My water flows at the same rate as when I turn it on to when it runs for 1-2mins. It's not like a garden hose where you shut the water off and on with a spray nozzle. MY house is the same way. Turn the faucet on and it's a continuous pressure. I use one of those cheapie brass $9.00 regulators.
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Old 05-15-2013, 06:16 PM   #9
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Some threads that may clear this up for you:

Is Water Pressure Regulator Needed?

Water pressure regulator?
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Old 05-16-2013, 12:06 AM   #10
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I think I need to get a better regulator.
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Old 05-16-2013, 08:45 AM   #11
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Originally Posted by CampDaven View Post
The cheapies may regulate pressure, but the little hole the water comes thru does restrict volume.
Many threads on this.
You are correct. The hole in the cheapies is 5/16 of an inch. If you remember your school class on flow. The flow will be slowed to the smallest hole it goes thru. If you have a 5/8 hose and use the cheapie reg. you will only get 5/16 flow.
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Old 05-16-2013, 10:44 AM   #12
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Ever fill a swimming pool with a garden hose? Some folks pay the fire depart to fill their pools with a big hose, others a big a water truck with a pump. Conversely - ever drain a pool with a garden hose. Some people rent a pump with a big hose. This is flow as best I can figure. as to what pressure is - I still go back to the thumb in the garden hose. The pressure can be the same on any size hose as best i know - but the volume of flow will depend on the size of the opening it is going through. We had water fights with hoses as a kid. Without the thumb - you lose. Don't think much has changed in this equation since the last time I filled a pool or the first time I had a water fight. Ever wonder why hoses are sold in different diameters? Flow perhaps. Maybe I need to get out more, go back to school or I'm just all wet. But where I live - flow and pressure are not the same thing.

Either way - I have restricted my flow with fiters and regulated my pressure with Valterra to my own satisfaction. Everyone should do as they please.
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Old 05-16-2013, 02:25 PM   #13
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Quote:
Originally Posted by CampDaven View Post
Watts (lowes/home depot) and Valterra (camping world) are good ones.
Both of those are also available from Amazon.com.

Valterra makes several different models, including the el cheapo non-adjustable without a gauge, and a non-adjustable but with a gauge.

My adjustable Valterra cost almost $60 including Texas sales tax but with free "Super Saving" shipping.
Valterra A01-1117VP Brass Lead-Free Adjustable Water Regulator : Amazon.com : Automotive
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Old 07-14-2013, 12:19 AM   #14
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It turns out the water line had plastic chips in it. Once clear it works like a charm.
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