sanitary pump discharge line shakes

billchat

when the sanitary pump turns on the discharge line vibrates and when pump shuts off the check makes a bang noise. i added supports and added clamps. It help but did not totally fix the issue, Any ideas or suggestions

aircooled81

Pump might be clogged, check the screen on the bottom. I have also seen the checks inside the valve brake off, but you would likely here water flowing back through on off cycle rather than the slam.

Abracadabra

There are quiet check valves to eliminate the "bang" when the pump stops lifting the water and the check slams closed.

http://www.supplyhouse.com/Zoeller-30-0043-2-PVC-Quiet-Check-Solvent-Weld-w-Union-Check-Valve-Clear-Valve-Body

Vibration indicates your piping needs more support and/or the pump might have issues. A good (ie. not cheap) ejector pump will be heavy (cast iron) and the mass should eliminate a lot of vibration.

Hilly

Also, is this a new installation? Did you install the proper check? I know a standard ABS/PVC Horizontal check will make a fair bit of noise (the bang mentioned above) but I've witness many of those in a vertical position and it is then a BANG.

JUGHNE

You could have something stuck on the impellor of the pump that is putting it out of balance causing the vibration. It is a much friendly job to pull the pump while still working than to wait for it to quit completely and have the pit completely full of nasties . With the pump working the pit can be pressure washed with the lid off and clean any solids out of the pit.

I am blessed in my own house to not have a sewage pump, but only a storm water sump pit. That pump seldom has to run so I rely on the thump (and frequency) of the check valve operation to assure me that it is working.

billchat

wanted to thank the responders: switch out check valve to Zoeller Quiet check, problem solved.