Swimables Replacement for Pentair Backwash Valve Piston Assembly | 51013811 | SW-26-130

The Swimables Replacement for Pentair Backwash Valve Piston Assembly (Part #SW-26-130) with O-Ring, is a compatible replacement for Pentair 51013811, designed for select Pentair push-pull / slide backwash valves. This complete piston assembly restores proper valve operation by controlling internal water routing during filter and backwash cycles. It is commonly used in compatible Pentair 2-inch push-pull slide valve assemblies, including valve model 263064 / 50290211 applications. The assembly includes the piston stem and handle-style operating shaft configuration needed to replace worn, leaking, or sticking original piston assemblies. Built from durable pool-grade materials, it is designed to withstand repeated movement, pressure, and chemical exposure in filtration systems.

Highlights

• Replaces Pentair 51013811: Designed as a compatible replacement for Pentair valve stem / piston assembly 51013811.
• Fits Select Push-Pull Backwash Valves: Commonly used in Pentair 2" slide valve assemblies including 263064 / 50290211 style valves.
• Restores Smooth Valve Operation: Helps correct sticking, leaking, or difficult backwash valve movement caused by worn piston assemblies.
• Complete Piston / Stem Assembly: Includes the full internal piston shaft assembly for straightforward replacement.
• Durable Pool-Grade Construction: Built to handle repeated backwash cycling, filter pressure, and chemical exposure.