Doby Flange System

Our Doby slide on flange system with an integral pocket of permanently flexible non toxic sealant, provides the rapid assembly of cross joints. The Doby Flange System is available in standard Euro sizes of 20mm, 30mm and 40mm and fully conforms to UK, HVCA Specification DW144. The product is tested and certified by BSRIA in accordance with the HVCA test procedures DW/TM1. This product is also tested in accordance with USA requirements of SMACNA. The Doby Flange is suitable for HVCA specification joint ratings up to J6 and pressure classes A, B and C.

For all your ductwork connections we can supply a full range of accessories to suit all sizes of flange including corner pieces, clamps and ‘Ductseal’ gaskets.

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