Larox Rotary Disc Valve (LRD) - Flowrox Oy - #1

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Larox Rotary Disc Valve (LRD) Larox Rotary Disc Valve is built with a cast body and features a heavy-duty stainless steel gate. LRD is a unique rotating disc valve designed specifically for heavy abrasive and corrosive slurries. The patented design allows the valve to cycle in heavy slurries without sticking or leaking and with minimum wear. LRD is available with pressure ratings from 10 to 100 bar. Valve Operation 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. Features • No blocking or leakage = 100% tight. • No leakage to atmosphere. • No sticking. • Long wear life, (due to rotating gate/disc). • Self-clearing gate action. • Seals in both directions. • Repacking of gland stem seals under pressure. • Wedge for positive seal • Cut away to clean seating area. • Seal out of flow when in open position. • Rising or non-rising spindle. Applications • Mining and metal industries • Mineral processing • Power generation • Sand and gravel • Chemical • Pulp and paper • Water and Wastewater treatment 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. How the valve seals work? LRD is a rotating disc valve for slurry. The isolation and sealing is between the replaceable rotating disc and seat. The disc seals against the seat when closed with the help of a tapered wedge gate support. The seat can be supplied in elastomer urethane or ceramic. This rotating disc and seat are both replaceable on site. Replaceable discs LRD valve’s design allows for on site replacement of the rotating disc.