I need to replace pressure switch, Help Please

[tonysoprano]

My pressure switch for my bladder tank has failed . I picked up a new one but it came with absolutely no directions.

Aside from the wiring what do I do.

I see that the switch screws onto a pipe, but I am hesitant to remove the old without some guidance.

Can I just unscrew the old one, put the new one on and wire it, and plug it in?

Will I have to put pressure back in the tank?

Please help.

Thanks

[Pilot Dane]

First, turn off the circuit breaker for your well. Open a faucet to releive all the pressure in the system (let the water run until it stops). Now you can disconnect the electrical and unscrew the pressure switch. Put a few wraps of teflon tape around the threads of your new pressure switch. Install the new switch. You may have to adjust it's pressure settings but it's probably pretty close right from the box.

[Pumpman]

While you have the system down, check the precharge in the bladder tank.
It should be set 2 psi less than puump cutin pressure (i.e. if pump comes on at 30 psi, the tank should have a 28 psi precharge in it).
Ron

[dmay008]

I have a similar problem but I have changed my pressure valve and it seems the pressure
in my tank is always 28psi. I have an incoming pressure of about 10-12 psi sometimes
goes to 20. We seem to have lost pressure gradually over about a months time. I am
thinking we have a hole in the bladder. Is there any way to be certain of this before I shell
out the buck for a new one?? We are also getting some black sediment in the water only
lasts for a few seconds then seems fine??? Help Thanks Dwayne

[nomind]

Hi Dmay008, -your post is confusing, -there is no 'pressure valve' . If you mean the grey or black box mounted at the base of your tank, that is the pressure switch . There are many posts in the past few days explaining how to properly adjust this.
You say "pressure is always 28" - if you are getting this reading from placing a tire gauge on the nipple at top of tank, that is correct. Where are you seeing "incoming pressure 10-12 to sometimes 20". If this is at the gauge near the pressure switch ( or on your pump if it is a jetpump), then this suggests your pump is not building sufficient pressure. Give more details and you will get help. :)

[Mike Swearingen]

If your pressure tank is charged to 28 psi for a 30-50 psi pump cut-on/cut-off, the tire gauge reading should always be between 28 and 50 psi as the pump operates, or you probably need to replace the tank. The bladder is shot.
Good luck!
Mike

[dmay008]

Yes the pressure switch, dont know why I called it valve. I have replaced it. Now the
pressure on the incoming line only gets to 10-15. I guess my question is should the tank
pressure increase to greater than 20 after the pump shuts off and remain there until water is turned on? If I can not see an increase in this
pressure should I add air, replace the tank because the bladder is bad, or is the pump in
my well bad? I hope this is a little more clearer. Thanks

[dmay008]

Sorry for the repeat, I found my answer, I am asuming the blader tank is bad since the pressure never seems to go above 28, Gonna change it Thanks for the help