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First in knife gate solutions

Watch the unique shut-off performance of Stafsjö's knife gate valves.

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High performance, heavy duty and high pressure – watch how Stafsjö's slurry valves works!

Stafsjö has a full range of knife gate valves developed for tough abrasive slurry and other related process media such as sludge and process water.

Our valves for slurry handling covers several pressure classes making the range complete for both the processing plant as well for the tailing system. Our slurry valve SLV is typically used in the sizing process on cyclones, as isolation valve around slurry pumps or tanks. For fast removal, old non-centered pipe lines, low pressure applications we recommend our fully flanged slurry valve SLF. For the tailing system typically higher pressure valves like our SLH (20 bar/290 psi) or SLX 50 bar (720 psi) are required with our SLV and SLF used as "dropper arm" valves around the tailing pond.

The slurry valves are supplied with valve bodies in coated nodular/ductile iron, unique seats in low friction special EPDM or natural rubber and a specially machined and grinded gate in stainless steel. The top works is modular designed and there are several actuator types and accessories to choose from in our standard collection. Fully individual traceability, makes it is also easy to supply spare parts and conversion kits to already installed valves.

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