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Topic: House water pressure question. (Read 908 times) previous topic - next topic

House water pressure question.

Does the water pump itself retain the pressure in the pressure tank, or is there a pressure valve associated with the tank?  My tank used to hold pressure for days if not consuming water, but now after a water system vinegar treatment, the tank won't hold pressure overnight.
Thanks, Mike
Mike Brady
'97 U320 SE. #5137
'13 Honda Fit
Willow Springs, MO

Re: House water pressure question.

Reply #1 –
Don't know about days, but mine will hold overnight at least.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: House water pressure question.

Reply #2 –
There is a check valve in the pump that holds pressure to the tank if it is working properly. Any small leak would cause loss of pressure.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: House water pressure question.

Reply #3 –
The pressure tank has a rubber diaphragm in it backed up by air. If the rubber diaphragm gets a hole in it the pump will cycle many times. To test the pressure tank all you have to do is press on the air valve at the very end of the tank if any water comes out diaphragm is leaking. Home Depot or Lowe's will have a $30 thermal expansion tank that will probably match yours exactly. The pressure tank will not have a check valve going into it the only check valve will be on the discharge side of the pump.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: House water pressure question.

Reply #4 –
After doing an extensive vinegar treatment last summer I now find a whole lot of calcium crystals coming thru our system and creating havoc. Our faucet nozzle screens slowly plug up with the crystals. The water pump backflow valve apparently got blocked open by a crystal (or more) and malfunctioned for awhile. It "self-cleared" a few days, after I cussed it, emptied all the lines and the fresh water tank, cussed it again, and then proceeded to refill the entire system after removing the nozzle screens and running water full force thru the lines.
I do plan on doing another extensive vinegar treatment when we return home this spring.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: House water pressure question.

Reply #5 –
Mike,

After your acid wash you may have a drain valve or fitting that is leaking.  You need to check your hot and cold low point drain valves and see if one of them has a seep. Your coach should have 4 low point drains (2 under the house batteries and 2 in the water pump area).  You also need to check around your whole water system in the coach to see if you have a crimped fitting that is seeping. The suspect places is around the water pump area, water manifold, and the domestic water lines to the Aqua Hot. These key areas have lots of fittings that can seep.

This kind of problem can happen due to the cleaning removing the calcium that has been clogging up the leak.

Mike, too
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."
 

Re: House water pressure question.

Reply #6 –
I had a slight leak in behind the wet bay wall. There are hidden connections there and a water inlet pressure regulator.
Toby a 94 u280
Cummins 8.3
6 speed Allison
Exhaust brake


Adopted by Derek and Annabelle