Pentair 34" x 84" Smoothie Effluent Manifold

The Pentair 34" x 84" Smoothie Effluent Manifold Assembly (part number EMTHS3484) is a heavy-duty, commercial-grade internal plumbing array engineered exclusively for the lower collection architecture of large-format horizontal sand filtration systems. This structural original equipment manufacturer (OEM) hardware is designed specifically to span the lower base of the 34-inch diameter by 84-inch long Pentair THS Series "Smoothie" horizontal sand vessel (model THS3484), which manages massive water turnover volumes in commercial, institutional, and water park aquatic facilities.

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Fabricated entirely from high-impact, heavy-walled Schedule 80 PVC, this commercial collection array serves as the primary sub-surface plumbing grid positioned at least 12 inches below the active sand bed. Its primary operational role is to cleanly gather and consolidate filtered water across the full length of the tank during the standard filtration cycle. The manifold body features a series of precision-spaced, threaded receiving ports tailored to secure up to ten self-cleaning, 2-3/8" x 10" ABS lateral arms equipped with micro-molded, non-clogging V-groove slots. As pressurized water moves down through the 1,950-pound bed of silica sand and gravel, the effluent manifold aggregates the filtered fluid streams from the radial laterals and directs the unified volume toward the main 6-inch flanged outlet bulkhead.

This highly engineered hydraulic distribution minimizes back-pressure and completely eliminates internal media channeling or dead-zones, enabling the system to safely sustain massive commercial flow velocities up to 285 gallons per minute ($\text{GPM}$) and withstand continuous operating pressures up to 50 PSI without warping, experiencing solvent-weld joint leakage, or cracking under sudden pump startup surges. Built to remain permanently submerged beneath a crushing media load in a harsh chemical environment, its robust plastic framework completely resists material softening, structural flexing, and advanced corrosion from prolonged exposure to commercial-strength sanitizers like liquid chlorine, bromine, and seasonal scale-removing acid washes. Due to its rigid, heavy-gauge Schedule 80 PVC pipe profile and wide-spanning horizontal branch configuration, this complete replacement commercial effluent manifold assembly carries a net product and shipping weight of approximately 28.50 to 32.00 pounds.