Pentair Suction Fitting Black | IntellipH Container | 521508 Specialty Chemicals Its 1-1/2" male-threaded (MPT) bottom

Its 1-1/2" male-threaded (MPT) bottom connection makes it a direct-thread replacement for a wide range of spa filter housings — no adapter required in most applications

The FullFloXF valve is available in multiple configurations — matching the part number stamped or molded on your original component is the most reliable way to confirm you have the correct replacement

Match the part number on your existing impeller to 355604Z to confirm you have the correct HP rating for your specific Challenger configuration before installation

Pentair Part Number 178546Z Part Name Lid Compatible Filter Sizes 150 sq

Pentair) or 8 full (Sta-Rite

Pentair Suction Fitting Black | IntellipH Container | 521508 Specialty Chemicals Its 1-1/2" male-threaded (MPT) bottomThe Pentair Suction Fitting (521508) is the OEM replacement black suction fitting for the IntellipH Chemical Container, used within Pentair's chemical dosing systems. This fitting draws liquid chemical from the IntellipH container and delivers it into the dosing line. A cracked, brittle, or improperly seated suction fitting compromises chemical draw, resulting in inconsistent dosing and potential system faults. Replacing this fitting with the correct