Pentair 50 / 75 SqFt Clean & Clear Tank Bottom

The Pentair Clean & Clear 50 / 75 SqFt Tank Bottom (part number 178562 or 178562Z) is a high-strength structural replacement base engineered exclusively for compact, vertical pool and spa filtration networks. This genuine original equipment manufacturer (OEM) structural housing is designed specifically for single-element filter configurations, acting as the foundational basin for Pentair Clean & Clear 50 and 75 square foot cartridge filters, Pentair Predator series filters, EasyClean D.E. filtration systems (Model EC60), and 44 GPM Warrior filter lines.

Molded from a thick-walled, glass-reinforced polypropylene composite, this durable thermoplastic chassis is colored in Pentair’s signature architectural almond to seamlessly maintain the original aesthetic integrity of the filtration pad equipment. The primary operational role of this lower shell is to securely cradle the internal single-cartridge core element while safely managing high-velocity water circulation. The tank bottom features integrated, heavy-duty 2-inch NPT threaded plumbing ports to allow maximum hydraulic flow with minimal restriction, as well as a dedicated 1.5-inch lower drain port engineered for quick washout servicing, chemical flushes, or winterization drainage.

The upper mating rim of this basin is precision-machined to pair flush with the matching upper lid (part number 178561) using a single high-tension locking collar or clamp ring. When compressed over a high-density elastomeric body O-ring, it establishes an absolute watertight boundary capable of safely sustaining continuous internal operating parameters up to 50 PSI. This rugged composite architecture is engineered to withstand extreme outdoor equipment pad environments, intense UV radiation, shifting seasonal temperatures, and advanced corrosion from constant exposure to pool sanitizers like chlorine, bromine, and salt-generator water outputs. Due to its rigid, single-piece structural mold, this replacement filter tank bottom carries a standalone product weight of approximately 5.00 to 7.72 pounds.