Pentair WC9-3 O-Ring Replacement for Select Sta-Rite Pool/ Spa Cartridge Filters pan screw replacement These valves are known for

These valves are known for being maintenance-free and not requiring lubrication over their lifetime

This Pentair high-flow manual air relief valve is compatible with select FNS® Plus

Fits models PTM50

Rotation: 180 degrees

● Poor Water Quality

Pentair WC9-3 O-Ring Replacement for Select Sta-Rite Pool/ Spa Cartridge Filters pan screw replacement These valves are known forEnsure a tight, leak free seal for your filtration system with the Pentair WC9 3 O Ring Replacement, a high quality cartridge filter o ring designed for long lasting performance in pool and spa environments. Built for reliability, this replacement O ring helps maintain proper pressure while preventing water and air leaks that can reduce filtration efficiency. Wide Compatibility Compatible with Sta Rite Posi Flo II pool and spa cartridge filters Fits