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Nothing but the Finest for Your Pool

System:3 brings you the proven performance of Sta-Rite's diatomaceous earth media in the easiest-to-operate filter. The greater cycle times and minimized maintenance coupled with Sta-Rite's superior grid system, gives you the finest D.E. filter available.

  • Durable two-piece tank housing constructed of Dura-Glas™, Sta-Rite's industry leading glass-reinforced composite resin
  • Posi-Lok™ clamps provide easy access to tank internals
  • 2 in. plumbing throughout combined with Sta-Rite's exclusive rectangular grid system provides superior D.E. filtration
  • Superior backwash capabilities means less manual cleaning of the grids
  • Dual Drain Plugs – Side plug assembly includes 1-1/2 in. NPT port for direct discharge plumbing
  • Contemporary style and matte black finish looks attractive in any pool setting
  • Perfect for inground pools, inground hot tubs, and water features

Note: Operating Limits – maximum continual operating pressure of 50 psi. Pool/spa (bather) applications, maximum operating water temperature (internal filter) 104°F (40°C).

Product Resources

Turnover Capacity (Gallons) (Flow Rate x 60 x Hours)
Product Filter Area (sq ft) Flow Rated1 at 1 - 2 GPM (per sq ft) 6 Hour 8 Hour 10 Hour Tank Port size D.E.2 Required (Lbs.) Carton Wt (Lbs)
S7D75 37 37 -74 13 - 27,000 18 - 36,000 22 - 44,000 2 in. 3.7 112
S8D110 53 53 -106 19 - 38,000 26 - 51,000 32 - 64,000 2 in. 5.3 136
Product Description Carton Wt (Lbs)
18202-0150 ABS 6-Position Valve with Union Connections - 1-1/2" Valve Port 5
18201-0200 ABS 6-Position Valve with Union Connections - 2" Valve Port 8
263053 VLV Push Pull, 7.81" center  
  • 1: Based on NSF recommended flow rate for commercial at 1 -2 GPM per square foot.
  • 2: Do not use more D.E. than shown here. Mixed results with D.E. alternatives.
  • 3: Valves must be purchased separately.
NSF Certified
NSF Certified
Product Description Approx. Ship.Weight (lbs)
25021-1021 D.E. Conversion Kit – S7D75 - Grid Assembly and Valve sold separately (new valve may be required) 18 lbs
25021-1025 D.E. Conversion Kit – S8D110 - Grid Assembly and Valve sold separately (new valve may be required) 20 lbs

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