The Stafsjö SLV and SLF knife gate valves are ideal for abrasive and demanding slurry where operation reliability and low life cycle cost are required. The SLV is a lugged version while the SLF is fully flanged and especially suitable on older non-centred pipes or low pressure applications.

When the valves are in opened position, the seats form a tight extension of the pipe line and no metal parts come into contact with the media. When the valve closes the two seats are displaced axially forming a seal with the gate until it forms a complete seal – 100% tight in any pressure direction.

The SLV and SLF comes with a coated valve body in nodular iron with integrated purge ports in the lower end to be utilised if a bottom cover is assembled on the valve. The unique seats are available in low friction special EPDM, natural rubber or Viton. These seats seal against the gate which is specially machined and ground to reduce the friction when the valve is operated. The gate can also be hard chromed to give a extremely hard and wear resistant surface.

Other slurry valves are the high pressure versions SLH and SLX which can be supplied for pressures up to 50 Bar.

Our Valve Repair Centres in Secunda and Durban provide a full valve repair and reconditioning service.

Contact one of our technical specialists for a quote today or download the SLV brochure to learn more!