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Old 06-26-2018, 09:48 AM   #1
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Water pressure regulator vs Low water flow?

Like most class A RV's the water inlet connection on my MH appears to have a built in water pressure regulator that is rated at 75 lbs. this said, I always use an additional (Camco 45 lbs) fresh water pressure regulator because I fear damaging the water lines. The problem is that DW and I are very disappointed with the low water flow which makes showers frustrating.

What to do? Should I stop using the 45 lps regulator ? Is there a way of increasing water flow without increasing pressure?

Thanks in advance for any thoughts.

John
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Old 06-26-2018, 09:56 AM   #2
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There is a difference between water flow (gallons per minute) and water pressure (pounds per square inch). That cheap 45psi pressure reducer probably is not a high flow regulator and is more than likely the culprit. Get a high flow pressure regulator like one from the Water Filter Store.
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Old 06-26-2018, 10:00 AM   #3
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The Fairview regulator gives you full flow while maintaining 55 PSI, which is great for showers! I bought the gauge for it also.
https://www.rvwaterfilterstore.com/Fixed.htm
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Old 06-26-2018, 10:01 AM   #4
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A good pressure regulator doesn't restrict flow, just pressure. Cheap PR reduce flow as a part of pressure reduction. I'd see if the originally installed 75 PSI regulator is functioning properly and is the cause or your add-on 45 PSI PR is the problem. Get a PSI gauge and see if the 75 PSI is doing its job. If it is, there's no need for the second restrictor.
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Old 06-26-2018, 10:05 AM   #5
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75 psi might be kind of high. Most are 45-55 psi.
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Old 06-26-2018, 10:11 AM   #6
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Use a watts residential you will have plenty of flow. The little hose end regulators have a tiny hole which doesnít allow flow.
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Old 06-26-2018, 10:22 AM   #7
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a Cheap inline set water pressure regulator , if that's what you have is the problem. a adjustable , around $50 with a pressure gauge , will serve you much better. Most current RV's have PEX piping and fittings that are rated for over 100 lbs pressure.. I use one at the park faucet set at 60 psi to keep the Hose , softener and pre filters safe in addition to the RV's inlet regulator. It should be said not all RVs' have a regulator as part of the inlet. Simple regulators restrict flow too much.
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Old 06-27-2018, 07:34 AM   #8
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We have had a similar issue related to using the cheap hose end regulator. As already mentioned, it had more to do with flow than pressure. So, I purchased an actual adjustable regulator with gauge, and better flow rating. Once I installed it the improvement was like magic! Should have done it a long time ago! Here's a link to the one I got from Amazon: Renator Regulator
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Old 06-27-2018, 09:23 AM   #9
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Get a good regulator.

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Old 06-27-2018, 02:17 PM   #10
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@spyderRV - does that small diameter braided hose cut down on your water volume flow?
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Old 06-27-2018, 05:53 PM   #11
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Quote:
Originally Posted by John Stott View Post
Like most class A RV's the water inlet connection on my MH appears to have a built in water pressure regulator that is rated at 75 lbs. this said, I always use an additional (Camco 45 lbs) fresh water pressure regulator because I fear damaging the water lines. The problem is that DW and I are very disappointed with the low water flow which makes showers frustrating.

What to do? Should I stop using the 45 lps regulator ? Is there a way of increasing water flow without increasing pressure?

Thanks in advance for any thoughts.

John
After being on this site for a bit I haven't heard of a coach with a built in pressure reduction on the hose input or somewhere near the source. I usually read about clogged screens on the inlet point and also at the sink, shower, toilet, outside shower station .
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Old 06-27-2018, 06:11 PM   #12
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We have had good results with this pressure regulator. https://www.amazon.com/Renator-M11-0...sure+regulator
I adjust it to about 70 lbs.
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Old 06-28-2018, 06:36 AM   #13
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Originally Posted by RKins View Post
After being on this site for a bit I haven't heard of a coach with a built in pressure reduction on the hose input or somewhere near the source.
My Beaver has a "built in" pressure regulator (actually I think all the "high-end coaches do).
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Old 06-28-2018, 07:21 AM   #14
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The built in reg. your sea breeze is a good reg. but it is very restrictive. It only has a 3/16 hole going through it. On my Dolphin I removed the built in regulator and got a regulator for a 3/4" pipe and adapted it to hose fittings. I also have a filter with a charcoal element. I put the regulator at the campground connection to take the pressure off my hose. My watts reg. is set at 65 lbs. and with the higher flow rate and pressure its like showering at home.
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