European Gate Valves (EGV) has completed a number of contracts for the supply of their double flap gate valves for use on roadstone coating plants. These valves have successfully overcome premature wear and performance problems which beset the rotary valves previously fitted, and have extended valve MTBF operating life on asphalt plants from an average of two months to in excess of two years. The valves are installed on pneumatic conveying systems carrying filler fines from a bag filter to storage silo. EGV double flap valves can supply products tailored to suit the particular thermal, abrasion and pressure requirements of specialised applications, including the requirements of gasification, pyrolysis, energy recovery from waste incineration and mineral processing etc.