Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
we had new strainers fabricated for the sump pit. we are starting up soon and are testing the pumps. when the pumps are started we get good flow from the valve at the bottom of the bell where the secondary strainers are located. when the pumps are shut off it creates a vacuum and air gets sucked in through the valve. Is this normal operation of the condensor pump? I believe this is normal operation and that valve is just breaking the vacuum and water is being sent back to the pit. It does seem like the pump hammers when it is turned off. we removed the strainers and the same situation occurs.