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Stainless Steel Underdrain
Stainless Steel Underdrain
Stainless Steel Underdrain
Verified Strength
Grout failure is a leading cause of underdrain failure. With the Trilateral® SST stainless steel underdrain, this is a thing of the past. Trilateral® SST is mechanically secured to the filter floor, eliminating grout from the equation. The mechanical braces are checked and field verified to ensure pullout strength is met, guaranteeing a great lasting installation.
Sealed In Tight, All The Way Around
Trilateral® SST is seam welded around the complete exterior shell. This feature provides strength, prevents leaks, breaks, and media intrusion. Welded underdrains can fail due to a missed or incomplete spot weld, seam welding eliminates this all together.
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Double The Thickness
The strength of the Trilateral® SST doesn’t stop with the mechanical fasteners. Roberts utilizes an industry leading 14-gauge stainless steel outer shell; literally double the thickness of some other competitors. This thick outer shell protects against unexpected pressure from pumps and water hammer.
3D Media Retention
Roberts utilizes a custom designed “3D” louver to distribute backwash air and water. These slots are supported on 3 sides, preventing deformation over time from water pressure or something as simple as a contractor’s boot.
Trilateral® SST
Stainless Steel Underdrain
Trilateral® SST is a superior stainless steel underdrain. Many customers have recognized stainless steel underdrains as the best in the marketplace; none of the material drawbacks of plastic underdrains and saves on the expense of concrete solutions. Stainless steel underdrains are ideal for biologically active filters.
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