How do I Make Swimquip Slide Valve Stop Leaking Around Shaft?

Mark Shvitz

Active member
Jun 20, 2018
Gainesville, FL
I have a Sta-Rite DE filter (S8D110) with a Swimquip slided valve. The slide valve leaks at the top. I replaced the O-rings, and it doesn't help.

The O-ring that is supposed to prevent leakage around the shaft is a #014 ring. It goes up against the underside of the lid. There is no seat for it. There is no way to make it sit tight against the lid. When you move the slide handle, the ring is pushed away from the lid, so there is no seal. I can't figure out how this ring is supposed to seal anything. Can someone explain this to me?

I am considering getting a new valve made by a different manufacturer. This one is poorly engineered. I am wondering if there are better valves that will be plug and play. They would have to have the same distance between the pipes that go to the pump and filter from the valve.