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12-05-2016, 12:25 PM
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#1
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Member
Join Date: Nov 2016
Location: Grass Valley
Posts: 41
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Water pressure reducing valve
'35US with instant hot water. Like many others I have the problem with water cycling from hot to cold repeatedly. In talking to Jayco customer service I told them I had tried it both with a 15 pound PRV and without. They told me they recommend not using a PRV.
I've been RVing for over twenty years and this is the first time I have heard a manufacturer recommend no PRV. That means they have great faith in their plumbing because plenty of campgrounds hit 45pounds+, which is hard on fixtures, particularly ice makers.
Any input?
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12-05-2016, 12:34 PM
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#2
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,844
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I use a Watts whole house pressure regulator set to 50 psi. 15 may be kind of low for anything.
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12-05-2016, 12:36 PM
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#3
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Senior Member
Join Date: Dec 2015
Location: Arizona
Posts: 2,324
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Dito I would keep the PRV!
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12-05-2016, 04:10 PM
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#4
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 16,077
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I use a whole house 3/4" regulator (that I added hose fittings to) set at 55 psi. It gives you full flow compared to the RV regulators with a 3/8 opening.
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 DISNEY LOVERS
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12-05-2016, 05:12 PM
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#5
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Site Team
Join Date: Nov 2012
Location: Clearwater, FL area
Posts: 5,196
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I use the adjustable regulator set at 40PSi.
Don
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12-12-2016, 08:16 PM
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#6
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Member
Join Date: Jun 2015
Location: McAlester
Posts: 64
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What is the max pressure you should have on lines?
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12-12-2016, 08:27 PM
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#7
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Senior Member
Join Date: Dec 2014
Location: FL
Posts: 11,281
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IIRC, Jayco says 60psi.
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12-12-2016, 08:29 PM
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#8
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Senior Member
Join Date: Jul 2014
Location: Picayune
Posts: 1,970
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I have had my fiver hooked up at my brother's place. Put a pressure gauge in between the faucet and pressure regulator once, just for kicks. Saw his water pressure max out at 110psi once or twice. I think max pressure for rv plumbing is 55-60psi. I personally would not want to go higher than 55psi.
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12-13-2016, 06:55 AM
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#9
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Member
Join Date: Jun 2016
Location: The Villages
Posts: 67
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I have an adjustable pressure regulator that I keep just shy of 50 psi. And take nice long showers.
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12-13-2016, 05:49 PM
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#10
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Senior Member
Join Date: Apr 2016
Location: Kingman AZ and where our Seneca is today.
Posts: 3,118
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Quote:
Originally Posted by kevfra
'35US with instant hot water. Like many others I have the problem with water cycling from hot to cold repeatedly. In talking to Jayco customer service I told them I had tried it both with a 15 pound PRV and without. They told me they recommend not using a PRV.
I've been RVing for over twenty years and this is the first time I have heard a manufacturer recommend no PRV. That means they have great faith in their plumbing because plenty of campgrounds hit 45pounds+, which is hard on fixtures, particularly ice makers.
Any input?
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We figured out the Hot Shower issue FINALLY.... We finally said that we won't keep the rig on "City Water" unless we are re-filling the Fresh water tank. We use the Water Pump 100% of the time now and just dialed in the temperature adjuster for the Water heater to give the perfect shower with the Hot valve (Wide open) and the cold valve shut (or maybe just starting to open it if the water starts to get a little too hot) - the Temp control is set at about 3/4 the way on the dial.
We just got back from a three week trip and had a great long shower each and every morning - no hot / cold cycling at all.
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12-19-2016, 09:24 PM
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#11
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Member
Join Date: Sep 2016
Location: Akron
Posts: 47
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Just took delivery on a 2017 31UL. With winter on I've got nothing to do but read the manuals. The Girard manual says 45 psi or greater. The Jayco manual recommends a 45 psi regulator. The water pump high pressure shutoff is 55 psi. And the filter will have some nominal pressure drop. So 15 psi regulator doesn't sound like it will work. The pump shutoff at 55 psi explains why that works. Pressure surges from the domestic source is what will damage your piping so it is important to have a regulator. It sounds like finding the correct pressure is the trick. Hoping for a break in the weather after the first of the year to get out on our first trip.
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12-20-2016, 10:52 AM
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#12
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Senior Member
Join Date: Dec 2015
Location: Arizona
Posts: 2,324
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Quote:
Originally Posted by Keetters
Just took delivery on a 2017 31UL. With winter on I've got nothing to do but read the manuals. The Girard manual says 45 psi or greater. The Jayco manual recommends a 45 psi regulator. The water pump high pressure shutoff is 55 psi. And the filter will have some nominal pressure drop. So 15 psi regulator doesn't sound like it will work. The pump shutoff at 55 psi explains why that works. Pressure surges from the domestic source is what will damage your piping so it is important to have a regulator. It sounds like finding the correct pressure is the trick. Hoping for a break in the weather after the first of the year to get out on our first trip.
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Hey thanks for the info will keep using my regulator!I kinda always felt there was a lot more to water pressure than hitting the on button!
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