The Roberts Filter Group

The Trilateral^TM Air/Water Underdrain from Roberts Leotech offers water producers and their consulting engineers flexibility to choose an underdrain system for their specific needs.

The Trilateral underdrain uses a passive air-scour approach to replace conventional, water-only backwashes. This proven design offers a low cost, easy to assemble combined air/water or water-only underdrain installation.

The Roberts Leotech Trilateral Underdrain System is an excellent system for filters utilized in both water and wastewater treatment plants. The Trilateral is designed to provide efficient distribution of backwash water for both water only backwashes and combined air/water backwashes.