Stainless Steel Knife Gate Valves, A351 CF8M, DN50, 2 Inches

Key Specifications / Features

Our Stainless Steel Knife Gate Valve is a high-performance unidirectional valve designed for precise flow control. It features an ASTM A351 CF8M body, providing excellent corrosion resistance and durability. With a DN50 (2-inch) diameter and a pressure rating of PN10 (Class 150 LB), this valve is suitable for a variety of industrial applications. Available with wafer or lug ends, it offers flexible installation options. Equipped with pneumatic actuation, it ensures reliable and efficient operation, making it an ideal solution for controlling fluid flow in demanding environments.

The KU series knife gate is a unidirectional wafer valve designed for on-off operation in industrial pipelines. Its unique structure prevents shutoff clogging when handling flows containing particles. The beveled knife gate design produces high shear force, allowing easy penetration through the flow.

Technical Specification

» Nominal Diameter: NPS 2-24 Inch (DN50-DN600)
» Design Pressure: PN10, PN16, Class 150 LB
» Temperature Range: -29°C to 538°C
» Max Working Pressure:
  DN50-DN250: 10 bar
  DN300-DN450: 7 bar
  DN500-DN600: 4 bar
» Body Material: Carbon Steel, Stainless Steel, Special Alloy, etc.
» Disc Material: Stainless Steel Chrome Plated, Special Alloy, etc.
» Seat Material: Stainless Steel + STL, EPDM (120°C), Viton (200°C), PTFE (200°C), NBR (80°C)
» Flange Standard: GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN 1092-1
» Face to Face: MSS SP-81
» Medium: Pulp, Coal Ash, Sewage, Food, etc.
» Applications: Pulp & Paper, Water Treatment, Beverage & Food, Fine Chemicals, Power Plants, Steel Industry, etc.

Structural Diagram

Product Features

» Cast-in guide claws at the port bottom, instead of a groove, eliminate potential shutoff clogging while providing a tight seal. These claws push the gate toward the seat for a secure seal in the closed position.
» Integral body design ensures easy assembly and zero shell leakage.
» Full-port design minimizes pressure drop and maximizes flow capacity.
» PTFE resilient points against the gate eliminate metal-to-metal contact between the gate and body.
» Super-thin body design and compact construction allow for easy installation.
» Beveled knife edge provides strong cutting force and tight sealing.
» Gate thickness can be increased to handle higher pressures.
» Side-entry seat is replaceable, reducing maintenance costs.
» L-shaped seat retainer locks the seat into the valve body and shields the seat side from direct flow flushing.
» Stem cover is available to extend the service life of the stem.
» Two thrust bearings minimize operating torque.
» Grease nipple provided for easy bearing lubrication.