Abstract

A valve structure for a swimming pool water filter includes:(a) a hollow body having multiple flow apertures,(b) a rotary plate on the body and having flow porting, the plate being movable toward and away from said flow apertures,(c) seal means between the body and plate,(d) a handle having operative connection to the plate to rotate said plate to bring said plate porting into and out of selected registration with said flow apertures,(e) and means mounting the handle to pivot without rotating the plate, and between a first position in which the handle has moved the plate to energize the seal means to seal off between the body and plate, and a second position in which the handle has moved the plate to de-energized said seal means.