Pentair 315 Holding Wheel Assembly

The Pentair 315 Holding Wheel Assembly (part number 070233 or 70233) is an internal structural alignment and compression hardware component engineered exclusively for classic vertical media systems. This genuine original equipment manufacturer (OEM) part is designed explicitly to anchor the core filtration components inside legacy Purex / Pentair CF-315, CFM-315, and CFW-315 water filtration units.

Primary Operational Role & Mechanics

Injection-molded from a heavy-walled, high-impact engineered polymer composite, this wheel-shaped alignment plate serves as the structural stabilizer for the system’s internal cluster. Its primary operational role is to establish an unyielding physical template that centers, aligns, and compresses internal components from the top down.

When positioned atop the vertical internal element network and compressed by the main central tie rod, it evenly distributes linear clamping forces across the cluster framework. This mechanical hold ensures that all internal segments remain perfectly upright and evenly spaced under aggressive hydraulic loads. By preventing the core components from shifting, tilting, or warping during operation, the holding wheel ensures a completely balanced water distribution path, blocks fine media from bypassing the core seals, and maintains total system pressure integrity up to 50 PSI.

Engineering & Material Properties

Built to survive decades of continuous submersion inside a highly dynamic, pressurized utility vessel, its robust composite matrix completely resists material softening, structural warping, and environmental stress-cracking. The premium polymer resin is heavily stabilized against advanced chemical degradation, preventing it from bleaching or becoming brittle due to continuous exposure to high-strength pool sanitizers like liquid chlorine, bromine, algaecides, and acidic maintenance flushes. Featuring a sturdy, open-spoke architectural design that minimizes flow restriction while maximizing structural rigidity, this individual replacement holding wheel assembly carries a net product and shipping weight of approximately 0.38 to 1.00 pound.