Pentair Paragon Stark 3-Way 4" Valve w/Hole Diaphragm (B4740) airinjectors A replacement filter cartridge helps

A replacement filter cartridge helps the filtration system continue removing suspended debris efficiently

An impeller like this is useful because it restores the pump’s internal water-moving function while maintaining compatibility with the original Hi-Flo side discharge design

A union like this is useful because it restores a serviceable connection point while preserving the original plumbing size and higher-temperature application style

and EC70 filter models and helps manage water entry into the filter body

this valve adapter flange helps restore the fit and function of the related Pentair PacFab assembly

Pentair Paragon Stark 3-Way 4" Valve w/Hole Diaphragm (B4740) airinjectors A replacement filter cartridge helpsFor repair jobs where the exact component matters, Pentair Paragon Stark 3 Way 4" Valve w Hole Diaphragm helps restore the original assembly without replacing more than necessary. It supports diverter valve function where water direction and internal movement must stay predictable. Keeping the right replacement on hand can reduce downtime during openings, route service, and equipment pad repairs. Confirm compatibility against the equipment model so