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-   -   Loud hammer when pump turns on... (http://www.houserepairtalk.com/f33/loud-hammer-when-pump-turns-7616/)

jfls45 09-23-2009 08:59 PM

Loud hammer when pump turns on...
 
2 Attachment(s)

For the last week or so I have noticed an intermittent loud hammering in the supply pipe coming from the pump. I can hear it about 30-40 feet away from where the pressure tank is located somewhere up inside the finished basement ceiling. I just installed two strong clamps to hold the pipe in place to stop any physical movement of the pipe near the check valve so I know it isn't just the pipe banging against a floor joist.

There is a check valve with pressure switch located before the tank, I filled the tank to 28psi air and the cut in/off pressure is set at 50/30 psi. The hammering noise is happening only when the pump comes on, when turning off there is no hammer.

I am wondering if the check valve at the tank is bad or the check valve down in the well at the pump is bad? Could the pressure tank be causing this? Remember the hammer is only happening when the pump turns on.

I went to local Lowes and Home Depot to find another brass check valve with the two holes for the pressure switch and air bleeder but no luck. Haven't had a chance to get to a local plumbing house yet.

Am I missing anything here in my troubleshooting?

Jeff


jfls45 09-23-2009 08:59 PM

Loud hammer when pump turns on...
 
2 Attachment(s)

For the last week or so I have noticed an intermittent loud hammering in the supply pipe coming from the pump. I can hear it about 30-40 feet away from where the pressure tank is located somewhere up inside the finished basement ceiling. I just installed two strong clamps to hold the pipe in place to stop any physical movement of the pipe near the check valve so I know it isn't just the pipe banging against a floor joist.

There is a check valve with pressure switch located before the tank, I filled the tank to 28psi air and the cut in/off pressure is set at 50/30 psi. The hammering noise is happening only when the pump comes on, when turning off there is no hammer.

I am wondering if the check valve at the tank is bad or the check valve down in the well at the pump is bad? Could the pressure tank be causing this? Remember the hammer is only happening when the pump turns on.

I went to local Lowes and Home Depot to find another brass check valve with the two holes for the pressure switch and air bleeder but no luck. Haven't had a chance to get to a local plumbing house yet.

Am I missing anything here in my troubleshooting?

Jeff



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