Stafsjö – SLV and SLF Slurry ValveEnquire Now

Stafsj  8211 SLV and SLF Slurry ValveStafsj  8211 SLV and SLF Slurry ValveStafsj  8211 SLV and SLF Slurry Valve

BRAND: StafsjöCATEGORY: Knife Gate Valves

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.

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

Specifications

SeriesSLV and SLF
Design

Knife Gate Valve for Slurry & Abrasive Media

Features
  • Full bore for maximum flow with no cavities
  • Bi-directional tight shut-off
  • Media does not contact body and blade in open position
  • Robust high strength body
  • Reinforced seat design
  • Packing system in TwinPack
Size
Range
  • SLV DN 50 – DN 900 / 2″ – 36″
  • SLF DN 80 – DN 400 / 3″ – 16″
Pressure
Rating

PN10 / ANSI 150

TemperaturesViton seat up to 180°C
End
Connections
Wafer Lug / Flanged
Blade
Materials

Duplex Stainless Steel EN 1.4462 Hard Chromed

Max
Pressure
16 bar @ 10°C
Body
Materials

Nodular Iron with epoxy coating internally & externally

Seat
Materials
EPDM / Natural Rubber / Viton
Options &
Accessories
  • Purge ports to evacuate residue
  • Manual, pneumatic or electric actuators
  • Chain wheel
  • Open close limit switches
  • Positioners
Applications

Where you are looking for a proven knife gate valve for slurry and abrasive media.

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