Modern Mining March 2019

PRODUCT News

Knife gate valves withstand harsh slurries bubble-tight seal and zero downstream leakage.

The Krebs® Technequip™ TGW series of wafer-style knife gate slurry valves was designed specifically for the harsh and abrasive slurries encountered in the mineral processing and power indus- tries, dealing with minerals ranging from cement, sand and gravel to coal, phos- phate, ash and alumina. Designed as a space-saving option for heavy duty applications, the long-lasting replaceable elastomer sleeves offer a reliable sealing solution using the latest technology. The valve’s reliable operation is based on its full port design, which allows the gate to be fully isolated by the sleeves from the process in the open position. As the gate closes it pushes between the two sleeves, discharging a small amount of material out of the bottom of the valve. This prevents material build-up in the seat area ensuring full gate closure, as well as preventing damage to the gate. When the gate is in the open or closed position, there is a 100 % bi-directional

To ensure long life, all valves are sup- plied with dust boots – or ‘bellows’ – as a standard feature, to protect valve stems and actuators. Hardware such as nuts, bolts and washers is specially zinc-plated to protect against corrosion. Each com- ponent is also individually epoxy-painted before assembly. Several actuation options are available, including pneu- matic, hydraulic, electric and bevel-gear actuators, as well as manual hand-wheel operators. Founded in Toronto, Canada in 1957, Technequip was acquired by FLSmidth in 1993 and integrated into FLSmidth in 2007. With installations across the globe, the slurry valves have proved themselves worldwide with features like their fluorocar- bon gate coating for reduced friction during actuation, the high strength stainless steel gate clevis and two-coat epoxy paint. FLSmidth, tel (+27 11) 210-4000

The Krebs® Technequip™ TGW knife gate slurry valves have been designed for harsh and abrasive slurries.

March 2019  MODERN MINING  55