Pentair Adapter Fitting | System 3 & System:2 Modular D.E. Filters | 24900-0509Z Swim Vests The vacuum tube assembly channels

The vacuum tube assembly channels suction through the Racer cleaner's internal drive system

The diffuser channels pressurized water exiting the impeller into the pump's discharge port

The Pentair Volute O-Ring (352626) is the OEM replacement volute O-ring for the Pentair Hydropump swimming pool pump

Never use petroleum-based lubricants — they will degrade the O-ring and cause the seal to fail prematurely

100% oil-free and water-soluble—safe for all spas and hot tubs

Pentair Adapter Fitting | System 3 & System:2 Modular D.E. Filters | 24900-0509Z Swim Vests The vacuum tube assembly channelsThe Pentair Adapter Fitting (24900 0509Z) is the OEM replacement adapter fitting for Pentair (formerly Sta Rite) System 3 and System: 2 Modular D. E. Filters. If your filter's fitting is cracked, stripped, or leaking at the base, this is the direct replacement. IMPORTANT: MODEL DATE RESTRICTION SYSTEM: 2 PLD SERIES This fitting is confirmed for System: 2 Modular D. E. Filter models PLD50 and PLD70 manufactured prior to October 2003 only. If your PLD50