Pentair Air Bleed Tube | System 3 Modular Media Filter | 25021-0003Z UHDSR137 The filter is single-use and

The filter is single-use and disposable

Length 23 1/4" Outer Diameter 8 15/16" Top Inner Diameter 4" Bottom Inner Diameter 4" Material PurePleat Pleatco Ultra Features

Take the other end of the FireFighter1™ Suction Hose and plug it into the inlet port under your skimmer basket while the pool pump is on

Brand Equipment Line Model / Part Number Notes Pentair System 3 S7M120 Accessory for System 3 Modular Media Filter SM Series

Confirm you have the correct length by measuring your existing lateral before ordering

Pentair Air Bleed Tube | System 3 Modular Media Filter | 25021-0003Z UHDSR137 The filter is single-use andThe Pentair Air Bleed Tube (25021 0003Z) is the OEM replacement air bleed tube for the Pentair (formerly Sta Rite) System 3 Modular Media Filter. If your filter's air bleed assembly is cracked, missing, or no longer venting trapped air properly, this is the direct OEM replacement. The air bleed tube channels trapped air from inside the filter tank to the manual air relief valve, allowing air to be purged from the system during startup and after