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Overview

Sheet Molded Fiberglass Tank With Backwash Valves

Sheet molded fiberglass tank with PPO resin backwash valves for long life, dependable performance and easy maintenance. This filter’s refined internal design minimizes flow restrictions requiring the least amount of pumping power, producing the maximum required flow rates – for lower utility costs.


  • Maximum Operating Pressure 50 psi
  • Corrosion-resistant 20 in. diameter fiberglass filter tank for strength and durability
  • Unique Spiro-Mite grid design provides high efficiency filtration and longer filter cycles
  • Exclusive clamp ring design is proven to be strong and reliable for quick and easy access to internal components
  • 2 in. plumbing connections provide maximum flow

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

SM 4000 FILTERS WITH BACKWASH VALVE
Turnover Capacity (In Gallons)
Product Model Effective Filtration Area (Sq Ft) Flow Rate (GPM) 8 Hour 10 Hour 12 hour D.E. Required (Lbs) Carton Qty Carton Wt (Lbs)
011555 SMBW 4048 47 94 45,120 56,400 67,680 4.8 1 89
147411 SMBW 4060 58 116 55,680 69,600 83,520 6.0 1 110

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