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Old 02-25-2021, 02:31 PM   #1
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Water pressure ... how much is too much?

I just got a water-pressure regulator to put on my freshwater hose.

I know this is redundant, as our 2017 19-footer has a regulator built in, but ... you know.

At any rate, what is a good pressure? This regulator is adjustable, so I can dial in a pressure that is acceptable but not too high ... whatever that magic number might be.
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Old 02-25-2021, 02:44 PM   #2
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45ish?
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Old 02-25-2021, 03:07 PM   #3
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Quote:
Originally Posted by Mollysdad View Post
45ish?
Standard residential water pressure is between 45 -80 PSI (Pounds per square inch)
Anything below 40 is considered low.Below 30 is considered too low.Above 80 is too high.
Minimum required by most codes is 20.
Since garden hoses are used by all, and as supply lines for RVs , "45 ish" sounds good.
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Old 02-25-2021, 05:27 PM   #4
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As stated above, the right pressure is 45psi. A little low is good for the AS. Pat
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Old 02-25-2021, 09:02 PM   #5
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Water pressure ... how much is too much?

As youíve stated you have a shurflow regulator built into the city water inlet. Itís calibrated to 50psi. When on shore power/water I enjoy every bit of 50psi when the campground supports it.

Iíve never seen the need to use a secondary regulator to step down the pressure.
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Old 02-25-2021, 09:12 PM   #6
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Nice new potable water hose in the sun. Campground water pressure over 75 pounds means the hose softens and quickly expands in the heat and ruptures. Iíve had it happen, and it makes an impressive mess.
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Old 02-25-2021, 09:17 PM   #7
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Quote:
Originally Posted by wulfraat View Post
As youíve stated you have a shurflow regulator built into the city water inlet. Itís calibrated to 50psi. When on shore power/water I enjoy every bit of 50psi when the campground supports it.

Iíve never seen the need to use a secondary regulator to step down the pressure.
I have.....85 psi off season camping.Based on a highly rated (for accuracy) pressure regulator. Glad I had it.
You do what makes you happy and I do what makes me happy. All is good.
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Old 02-26-2021, 05:50 AM   #8
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A good friend with an SOB motorhome was camped at a COE site in North Texas when the water pressure suddenly increased due to a failure at the utility provider. Either his onboard pressure regulator was not working or it was overwhelmed by the surge. End result was blown-out water lines in his shower and extensive repairs.

I always use a brass regulator on my water hose, at the faucet end. I just leave it attached to the end of the hose, and it's no more trouble than the hose would be when i set up camp.
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Old 02-26-2021, 06:00 AM   #9
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I run 55 with a a watts regulator. No issues so far.
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Old 02-26-2021, 06:08 AM   #10
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Quote:
Originally Posted by wulfraat View Post
I’ve never seen the need to use a secondary regulator to step down the pressure.
I'm a belt and suspenders guy. There's three reasons.
1. I don't really trust the built in regulator.
2. The one I add at the tap protects my hose, filter and connections.
3. I try to eliminate leaks. So having 75 psi at the hose barb creates more leaks in the hose and fittings then if it was 45.
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Old 02-26-2021, 06:17 AM   #11
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Our solution...keep the FW tank full.
I did MacGyver a gauge/reg, which I would use when hooked up as second security, but I don't.

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Old 02-26-2021, 06:59 AM   #12
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Quote:
Originally Posted by wulfraat View Post
As youíve stated you have a shurflow regulator built into the city water inlet. Itís calibrated to 50psi. When on shore power/water I enjoy every bit of 50psi when the campground supports it.

Iíve never seen the need to use a secondary regulator to step down the pressure.
The only time this is not true is where some campgrounds have over 100PSI on the line.....and here in New England...particularly Normandy Farms, their pressure swings between 80-110 PSI (Measured at sites I've had there)....they strongly recommend you to have an external pressure regulator to protect your HOSE & campers which may/may not have internal regulators and may not support those high pressures. Most campgrounds we have seen (in New England) are around 60/65 PSI ish.

https://www.normandyfarms.com/reservations/

See under "more information"....first bullet.

But to the original post, the internal as mentioned is set to 50 PSI, we set our external regulator to 65 PSI..when we are on full hookup, good for showers!

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Old 02-26-2021, 07:02 AM   #13
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This is the regulator I use:

https://www.amazon.com/Pressure-Regu...6ZZ2BNNK&psc=1

In all our travels we have found pressure in a campground can vary tremendously. On the low side is most common but the highest I've seen would surprise you at 110 lbs. The regulator in the Airstream is, well, quite frankly, very cheap. I use two and it has saved my hoses from brutally high-pressure numbers sometimes.
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Old 02-26-2021, 07:16 AM   #14
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I have found this to be very informative because I thought I would use the regulator right at the Airstream connection. Now I know why to put it b4 the hose and filter...good advice from all above.
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Old 02-26-2021, 07:23 AM   #15
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Quote:
Originally Posted by bweybright;
I have.....85 psi off season camping.Based on a highly rated (for accuracy) pressure regulator. Glad I had it.
You do what makes you happy and I do what makes me happy. All is good.
I do carry a basic little one if I ever need it. I don't bother to use it because it restricts flow too much, especially for the shower.

hmmmm.... maybe I need a variable / adjustable model like the Watts or Valterra...
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Old 02-26-2021, 07:29 AM   #16
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We had an issue with too much pressure once which led to some leaking in the bathroom. I got lazy for a one night stop and forgot to attach my external regulator.
On another note, our internal regulator seems to step down the pressure more than we like for showers. We have changed our practice to just use the fresh water tank all the time with our water pump. This gives great pressure and keeps the water always circulating and fresh in our fresh water tank. This has also come in handy when the water pipes at the campground broke and we still had water when most others did not (this happened just last week).
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Old 02-26-2021, 07:30 AM   #17
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Quote:
Originally Posted by wulfraat View Post
I do carry a basic little one if I ever need it. I don't bother to use it because it restricts flow too much, especially for the shower.

hmmmm.... maybe I need a variable / adjustable model like the Watts or Valterra...
Yes! You can adjust these regulators with a screwdriver!
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Old 02-26-2021, 09:49 AM   #18
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Old 02-26-2021, 11:45 AM   #19
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The real problem with high Tap pressure is that your hose can only handle 50 psig or so in the summer heat. Also if the built-in regulator does not shut off completely then you will build full pressure in the trailer over time. An additional regulator at the tap is as Mollysdad says ...Belt and Suspenders
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Old 02-26-2021, 01:11 PM   #20
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That's the same water-pressure regulator I just picked up. Looks well constructed.
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