Question about water pressure

[oneeyejak]

Good morning team.

(Apologies if this has already been posted...)

2016 Sunset Trails-
I'm wondering about the maximum PSI for the water lines.

When I hook up to water at a site, I like the added pressure that the hydrant provides over the pump. My thought was to pick up a pressure monitor to test the pressure at the hydrant before attaching the hose. I have a pressure regulator, but prefer not to use it if I don't have to.

Thanks in advance
-Steve

[Papa-T]

You can buy one for about $20 that is preset at 40-50psi or the bigger one that you can adjust and set yourself for around $50. Most don't recommend anything over 50 psi on RV lines. Welcome to the forum.

[travelin texans]

The pex piping is rated at about 100 psi, but the cheap plastic fittings they use are probably not.
Get yourself a 3/4" water "regulator" with a gauge, it will cost more than $20 though, set it somewhere between 50-60 psi & forget it, I set mine at 55.Your pump probably puts out 40-45 psi & most parks we've been to have between 50-55 psi, but we've been to several that are 80-100 psi & posted "regulator required", not sure one of those "restrictors" is even capable of handling that kind of pressure. We spent last winter in a park that had their own water well & the pressure would vary between 30 & 70 so it was almost a requirement for a regulator as you didn't know at any given time what pressure you'd have.
There are 2 things I always use #1 a surge protector on the power & #2 a good water pressure regulator, both get used regardless of where we are at or whether needed or not.

[Bert]

Originally Posted by travelin texans

The pex piping is rated at about 100 psi, but the cheap plastic fittings they use are probably not.
Get yourself a 3/4" water "regulator" with a gauge, it will cost more than $20 though, set it somewhere between 50-60 psi & forget it, I set mine at 55.Your pump probably puts out 40-45 psi & most parks we've been to have between 50-55 psi, but we've been to several that are 80-100 psi & posted "regulator required", not sure one of those "restrictors" is even capable of handling that kind of pressure. We spent last winter in a park that had their own water well & the pressure would vary between 30 & 70 so it was almost a requirement for a regulator as you didn't know at any given time what pressure you'd have.
There are 2 things I always use #1 a surge protector on the power & #2 a good water pressure regulator, both get used regardless of where we are at or whether needed or not.

110% correct!

[oneeyejak]

Danny/Linda-

Thanks for the info.

I am leaving for vacation in a week and will be in a full hookup site. I actually have a surge protector on order to be delivered tomorrow. I picked up a brass regulator yesterday, but I may check into the ones you describe....

[mark5w]

Acutally, the pex connectors are rated for 160 psi. Even the most common ones sold at big box supply stores are rated for that. Pretty hard to believe that they are not rated at equal to or higher than the pex itself.

CinchClamp System

Connection rated to 160 psi @ 73°F; 100 psi @ 180°F.

[oneeyejak]

I just came across this...

PEX tubing technical specifications and general installation practices

With these kinds of ratings, do I really need to worry about lines bursting?

[Lloyd]

If you get a good regulator, then you won't have to worry about water pressure at all.
It's pretty cheap insurance for all you have invested in the RV.

[mark5w]

The weakest link is not the connector or the pex itself. It's the missing link that put it all together.

[oneeyejak]

I actually just placed an order for the regulator which Danny The Travelin' Texan suggested above.

[Russb]

The water hose may be the weak link also.

[travelin texans]

Originally Posted by Russb

The water hose may be the weak link also.

Always put the regulator on the faucet so your hose is also protected.
I saw a couple of newbies at one of those parks with the extreme pressures & they had their little restrictor on the rv & their water hose looked like it had swallowed a basketball, I don't know what kept it from bursting, I told them about it before it burst & loaned them a hose.

[FezUSA]

I work for a company that produces PEX tubing for a lot of the brands that you purchase, as well as water lines for the big fridge makers, faucet makers and hot water heaters. We pressure test to much much higher levels (600PSI) and higher temperatures than you will EVER get on a campground or residential hook-up. Period. The stuff will be good long after the rest of the unit fails away!! We get periodic calls from the lawyers stating that some insurance company is paying out because the home owners had a water leak/flooding issue that they have somehow determined is due to a failure in one of our products. We fight and win almost all of these cases proving that it is usually an installation problem that has caused the 'issue'.

That being said, get yourself a regulator, set it, forget it!!

[2slick]

Don't use a regulator here. Only issue I have had is the check valve in the pump won't hold up. I put a pvc check valve in, but noticed it is leaking by. Have a new brass one to install.


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