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Stainless Steel Flang Gate Valves. Wide Pressure Range: Suitable for nominal pressure PN1.6~42.0MPa (Class 150~2500). Hard Alloy Sealing: Sealing surfaces overlaid with Co-based hard alloy for wear and corrosion resistance. Corrosion Resistant Stem: Valve stem is tempered and surface-nitrided for excellent damage and corrosion resistance. Flexible Material Selection: Parts, flanges, and ends can be selected based on actual working conditions or customer requirements. Multiple Actuator Options: Available with Manual, Electric, or Pneumatic actuators.