Sand Filter Drain Plug Leaking

The drain plug will be white and around 2 inches in outer diameter size.

Sand filter drain plug leaking.

Typically an o ring or some teflon tape will seal these up. There are other sand filter leaks that can be fixed however with the right filter parts. Remove the top mounted valve or dome. I realized it was leaking out of the drain line backwash port on the sand filter when it was set to.

A leaking sand filter can happen if the filter was not fitted correctly. Water enters the tank through an inlet at the top and gravity pulls it downward removing impurities that get lodged in the sand. Replace valve or dome. The leak could be the filter the union on the pump side or the union or valve on the return side.

Here in the northeast we have to winterize the filter and drain all of the water out. The filter will fill up once connected to the pump. If the leak seems minor and is little more than a drip check for any. The drain plug on a pool filter is often threaded and hard to reach due to its location so this can result in cross threading of the connection.

Drain the tank by removing the drain cap. If this happens the drain cap can leak even once you have threaded it on correctly. Oh pentair filters you will see the drain plug either underneath or on the side of the tank. Leaking water from or near a pool filter can have more than one cause.

The drain plug or cap can lose an o ring or gasket. We were losing a lot of water out of the swimming pool. At the bottom of the tank the water enters the laterals which have tiny perforations that keep out the sand. In the spring close the drain plug and turn the filter on and it fills it up and eventually all of the trapped air is removed via the tube.

On sta rite sand filters you can find the drain plug in the center of the bottom of the filter tank. Jackie wrote an entire how to change pool filter sand post about how to change pool filter sand but here s a 5 step summary. Pour in new 20 silica sand labeled pool filter sand. Scoop out or use a wet dry vac to remove sand.

You can solve this by inspecting the suction side and return side. It s important to exactly where the leaks origin is. You ll want to pay particular attention to the multiport valve spider gasket pump pot lid and all unions in the plumbing.