Product Name: Wafer Type Knife Gate Valve
Size Range: DN50–DN600, 2-24 Inch
Temperature: Standard seals up to 75°C; optional rubber seals up to 160°C
Standard Pressure: DN50–DN400: 10 bar; DN450–DN600: 6 bar
Optional Pressure: Up to 14 bar
Seal Sleeve Material: Natural rubber (standard)
Standard Construction
Body: Ductile Iron
Gate: Stainless Steel SS 316
Seal Sleeves: Natural rubber with internal reinforcing rings
Secondary Seal: EPDM
Flange Drilling: To common international standards
Available Options
Gate Materials:
Stainless Steel SS 316
Stainless Steel SS 316L
Duplex 2205
Super Duplex 2507
Product Features
100% bubble-tight sealing ensures absolute zero downstream leakage
Double-wedge design allows for bidirectional flow and shutoff
Unobstructed flow eliminates solids and minimizes pressure drop across valve and gate
Bolt-free design reduces overall volume and weight while ensuring reliable gate closure
Resilient seat with dynamic self-adjusting sealing properties
No gate or stem packing required, eliminating leakage and maintenance issues
Long-lasting, durable lubrication system
Lubricated components are isolated from slurry contact
Flexible bracket design allows top disassembly and actuator hub replacement without welding
For DN400 and below, open/close positioning brackets are standard and compatible with factory-supplied or user-supplied fixed positions
Applications: Mining, Coke industry, Steel industry, Power plants, Chemical processing, Pulp and paper industry, Cement plants

Source: https://www.magpievalves.com/wafer-knife-gate-valve-ductile-iron-dn50-dn600-pn6-pn10.html