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Old 05-11-2015, 12:50 PM   #15
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The hot water tank is often the critical item and often have a relief valve set not that much higher than 60psi.

Many RVs have a pressure regulator built in to the back of the mains water inlet, but it wouldn't be smart to rely on them working accurately, especially at 120psi in
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Old 05-11-2015, 01:06 PM   #16
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I always check the pressure first, and if less than 60 pounds I don't install it.
That's what I did when we had the Dutch Star, the Magna has a Watts built in so I have no choice now. It's always there but I guess that's OK.

Our favorite campground runs about 120 so I just used it there all the time.
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Old 05-11-2015, 01:10 PM   #17
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Wow, that is some serious water pressure. Definitely use a regulator and NOT A RESTRICTOR. They only restrict the flow and when you stop running the water, the pressure will go back up to whatever they supply.
Seems like most people don't realize that and think that they can get by with just opening the faucet a little bit. Pressure doesn't work that way! It equalizes on both sides of a restriction when not flowing.
Ex WSDOT Regional hydraulics design engineer here. Just one of my many "hats" I've worn over the years!
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Old 05-11-2015, 01:15 PM   #18
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Did the park have a sign up in the office , stating that they have high pressure and regulators ARE required .
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Old 05-11-2015, 02:19 PM   #19
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Watts makes great pressure regulators, a 1/2 inch or larger, connected to the park end of your fresh water hose with the proper adapters Works wonders.. Of course once it's old enough it starts to restrict flow (pressur drops as the flow increass) but rebuild kits can be gotten easily.

Same for ZURIN

Watts also makes pressure gauges (NOTE: I do not know about Zurin) which are crap, very short Mean Time Before Failure.

The reading is not out of line for some of the parks I have been in.
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Old 05-12-2015, 11:04 AM   #20
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A couple of years ago I was in a park in San Antonio, TX where they stated the water pressure was 160 and you had to use a regulator.
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Old 05-13-2015, 08:52 AM   #21
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I never check the pressure. .. but I always install a regulator. Pressure can change.
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Old 05-13-2015, 09:44 AM   #22
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I never check the pressure. .. but I always install a regulator. Pressure can change.
Yes. Seems that some just check pressure when they hook up, and if it falls inside their personal comfort zone, they don't bother with a regulator. Since there's no guarantee it'll remain at that level, they leave themselves vulnerable.
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Old 05-13-2015, 12:03 PM   #23
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If it is, I don't think I would be connected to it. Maybe time for a new gauge.
Yep, you hit the nail on the nead. When I unhooked and got ready to leave without the gauge even hooked up to anything it was showing 55 pounds!!
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Old 05-13-2015, 07:43 PM   #24
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Water pressure varies all over the place. Those Walmart regulators are worthless or worse. They make you believe it is dropping the pressure while it may not.

Any one traveling in a RV should carry an adjustable regulator. You can get a good one at Camping World, or you can get enough pieces at Lowes or HD to build your own. I use an in line filter connected to park water and attach the adjustable regulator on the output so the pressure is not reduced by the filter. I adjust it to 60 Psi. This regulator has s set screw and a gauge to adjust output pressure.
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Old 05-22-2015, 06:43 PM   #25
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We just checked into a campground in San Antonio, Texas. We had to sign an acknowledgement that the park had 160 pounds of pressure and regulators were required.
160 pounds!
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Old 05-23-2015, 10:31 AM   #26
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Yes. Seen lots of places that high.
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