At the Mena-Ex exhibition, 24 January 2010, Jeddah, Saudi-Arabia, Larox Flowsys introduced a new valve to supplement its pinch valve and knife gate valve families. The Larox Rotary Disc (LRD) valve is unique due to its rotating disc that is designed specifically for heavy scaling, abrasive and corrosive slurries.
The LRD Valve is designed for leak tight shut off slurries and liquids within a pipeline. The valve is designed to be operated only in the fully open or fully closed position. As the actuator is opened or closed, the disc is allowed to rotate. This happens due to the pressure pushing against the disc, causing the disc to touch the valve seat and rotate.
As the valve is cycled, the disc rotates a few degrees, seating in a different position each time. The wedge gate support has a cutaway behind the disc clearing debris away and thus, ensuring the disc closes and seals every time. The very nature of the construction allows a maximum of flexibility in customizing to meet specific needs, in terms of materials pressure rating etc. The body and bonnet are made of cast steel and can be made out of different materials to best suit the customer needs.
The bonnet houses the rotating disc when open and seals around the spindle. Larox rotary Disc valves are produced with manual, manual gear, pneumatic, hydraulic and electromechanical actuators.