How Do You Replace Swimming Pool Check Valves?
Check valves are installed when a pool uses solar water heating panels. Solar panels are usually mounted on the roof above the level of the pool filter. Check valves are installed to prevent the pool filter from being back-flushed by the water in the panels when the pool pump is turned off. If a check valve is leaking, you will hear the filter ‘gurgle’ and may see DE (Diatomaceous Earth) leaking into the pool around the sump. Turn off the pool pump. Check the existing check valves carefully. Note the direction of flow. There should be an arrow on the plastic exterior shell. Use the strap wrench to loosen the fittings on each end of the check valve. Work on replacing one check valve at a time to prevent getting the direction of flow confused. With the check valve fittings loosened, remove the old check valve. Lubricate the O-rings on the new check valve. Install the new check valve and tighten the fittings. Repeat the removal/replacement process with the other check valve and restart th
