CMP 25831-000-100 P-Style Slide Valve Internal AssemblySlide valves play a critical role in DE filter operation by directing water flow during normal filtration and backwashing. When a slide valve becomes stiff, leaks internally, or fails to seal correctly, filter performance is compromised and water may bypass the filtration system entirely. The CMP P Style Slide Valve Internal Assembly is a complete internal replacement designed to restore proper function to compatible P style slide valves used on DE