Automatic Self-cleaning Filter Optimized impulse back-flushing V-SLOT slotted wedge wire screen Super ... excellent back-flushing performance, high strength structure, long service lifeOptimized impulse back-flushing, aim at the element and back-flush it ... high and low spraying water, squirt water, heat exchanging water, sealing water, bearing cooling water, oil wells injection water, recycled process ...