How much plumbing leakdown is ok?

[Phallon]

I've heard the pump kick on for a second or 2 twice in the past day. Once sitting in the trailer working all day today. No obvious external leaks, so I'm assuming the check valve in the pump, if it's not just thermal contraction or something. Giving it a thought it seems pretty reasonable to me with no other issues. I'd wory about it it & dig in to fix it if I was getting hits hourly or something I suspect. Anybody have any thoughts on when you should bother digging in?

[parkmodels]

You should bother digging into plumbing issues in your RV as soon as you notice any leak or drop in water pressure. Don't wait; fixing small problems early is easier and prevents bigger headaches later on. 🚐💧

[TandW]

This would likely be normal if you had stopped the water heater and it was cooling off.

[Old-Biscuit]

Pump pressure switches typically have a 15# differential between Start and Stop
So if pump cycles......you have a LEAK

Find it/Fix it..........before water damage occurs which can get expensive

[Phallon]

No more unexpected pump running in several days with me working in the trailer all day. Still no sign of leaks at any fixtures or in the basement. Chalking it up to a bit of debris in a check valve that's moved on, or thermal expansion/ contraction.

[NXR]

Could have been air in a line if you recently sanitized or something. My water pump will cycle for a second intermittently for maybe a week after sanitization.

If you use a pressure regulator with a pressure gauge it will tell you if there is a leak. When we leave the RV I always turn the campground spigot off and note the pressure. A drop of maybe 1 PSI will be seen even if gone for 8 hours. If it drops more it's usually a tiny seep at the hose filter or something.

Ray

[NXR]

Originally Posted by Old-Biscuit

Pump pressure switches typically have a 15# differential between Start and Stop.

Great point. The SHURFLO 4008 that is used in a lot of RV's turns on at 40 PSI and turns off at 55 PSI, +/- 2 PSI.

That's why I always chuckle at people who proclaim that you should never set your pressure regulator higher than 40 PSI. If pressurizing the piping to 55 PSI with the water pump is OK then pressurizing the piping to 55 PSI with the city water regulator is also OK.

Ray

[twinboat]

With so many tankless water heaters out there now, setting the water pressure regulator to low becomes a problem.

They like more then 40 PSI.