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Old 08-26-2015, 01:31 AM   #1
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Water pressure on city water Q

Is this line (the one after the water pump supposed to be under pressure when on city water?

I had put a regular vinyl hose on here and when I pressurized the trailer with city water I noticed this short line expanded like a balloon, but didn't burst.

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Old 08-26-2015, 03:04 AM   #2
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Yep. One city water check valve is usually part of the pump. City water pressure comes from the hose inlet, through a check valve that's part of the inlet, through a 60 PSI fixed pressure regulator then splits toward the pump and the rest of water system.

The check valve inside the inlet fitting keeps the pump from dumping water overboard. The pump check valve keeps city water from going backwards through the pump and filling your fresh water tank.

This all assumes your AS is Plumbed in the standard manner.

I'd suggest using tubing that can handle more pressure. I also use an adjustable external pressure regulator to protect my white city water hoses and the rest of my plumbing. I set it to about 30-40 PSI. It's a good idea in any case. Don't use a cheap in line external regulator. It screws things up on low pressure, and makes you think your expensive tankless water heater is malfunctioning. Don't ask how I know this...😄


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Old 08-26-2015, 08:49 AM   #3
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What kind of external pressure regulator do you use? I just barely opened the spigot and had a lot of pressure in the AS. I think the original regulator isn't working.
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Old 08-26-2015, 08:53 AM   #4
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For some reason I remember 30 psi being ideal, so when I replaced my regulator that was the setting. Shower is fine.
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Old 08-26-2015, 08:55 AM   #5
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I use a watts external regulator set at 50psi.
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Old 08-26-2015, 02:23 PM   #6
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It's an adjustable regulator with gauge from Camping World. Don't remember the brand.


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Old 08-26-2015, 04:37 PM   #7
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City pressure from a hose bib should only be around 60 psi. Or even 70 that type hose should be fine. You are talking about cold water?
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Old 08-26-2015, 06:42 PM   #8
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Yes. Cold water. I've seen ridiculously high pressures in campgrounds. I basically don't trust their pressure and want to protect my hoses. I like gauges so I know what's hitting the AS.


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Old 08-27-2015, 08:34 AM   #9
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I tested the spigot where I was getting the water from and it's 60psi. I still think ill pick up an external regulator so I can set it lower.

The braided hose is holding up fine at 60psi.
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Old 08-27-2015, 10:54 AM   #10
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Quote:
Originally Posted by rmkrum View Post
Yes. Cold water. I've seen ridiculously high pressures in campgrounds. I basically don't trust their pressure and want to protect my hoses. I like gauges so I know what's hitting the AS.


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I was at a CG in Rock Island a couple weeks ago. Spigot psi was 85!!!!!!
regulators are a necessity in my book.
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Old 08-27-2015, 04:24 PM   #11
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I'd love to find one with a gauge on the input as well as the output, but i settled for one on the output because that's the important one.


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