Water pressure
- Thread starter davis
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Jadnashua
Retired Defense Industry Engineer xxx
that's not much info to go on...
Do you have a pressure-reduction valve? Have you hooked up a pressure gage to see what your pressure really is?
Is this on a well, or a municipal water system?
Do you have a pressure-reduction valve? Have you hooked up a pressure gage to see what your pressure really is?
Is this on a well, or a municipal water system?
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Mikebarone
DIY Senior Member
Yep....need more info.
Has this problem been doing this for a while, or did it just start?
Has this problem been doing this for a while, or did it just start?
Gary Slusser
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That is the difference between static and dynamic water pressures. Static is always higher than dynamic, meaning when you run water. That's because of the pressure loses in the plumbing system, and when you can notice the decrease, you usually have low static pressure and/or a partial blockage somewhere in the system.
So answer the other guys' questions and we can go from there.
Jadnashua
Retired Defense Industry Engineer xxx
It sounds like your bladder tank needs service or replacment. With a well, it is doubtful you have a PRV. Look at the pressure gauge while someone opens a faucet. My guess is that the pressure drops almost immediately and then the pump turns on. If so, this is an indication that the bladder tank is not working properly. It could be that the bladder is shot, or it has lost its pressure charge.
Turn the pump off, open a valve and let the water run until it stops, then take an air pressure gauge (tire pressure gauge) and check the pressure on the bladder tank. If your pressure switch is set to say 30-50, then the tank static pressure should be set to 2 less than the lower number, or 28#. If you get water out of the air filler, the tank is shot. If you don't, pump it up as required. Let it sit for about 10-minutes and recheck to see if it held. If all is well, turn the pump back on.
Turn the pump off, open a valve and let the water run until it stops, then take an air pressure gauge (tire pressure gauge) and check the pressure on the bladder tank. If your pressure switch is set to say 30-50, then the tank static pressure should be set to 2 less than the lower number, or 28#. If you get water out of the air filler, the tank is shot. If you don't, pump it up as required. Let it sit for about 10-minutes and recheck to see if it held. If all is well, turn the pump back on.
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