Pneumatic Knife Gate Valves, A351 CF8M, 10 Inch, 150 LB, Lug

Key Specifications / Features

The Pneumatic Actuated Knife Gate Valve features a robust ASTM A351 CF8M stainless steel body, ensuring excellent corrosion resistance and durability. Designed for unidirectional flow control, it has a 10-inch (DN250) size, Class 150 LB (PN16) pressure rating, and lug-type ends for secure installation. Equipped with limit switches for precise position monitoring, this valve is ideal for handling slurry, pulp, and wastewater.

The knife gate valve is a unidirectional wafer valve designed for on-off operation in industrial pipelines. Its unique structure effectively prevents clogging during shutoff, even when handling media containing particles. The beveled knife gate design generates significant shear stress, allowing for easy flow penetration and reliable performance.

Technical Specifications

» Structure: Unidirectional wafer knife-edge gate valve
» 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 Alloys, etc.
» Disc Material: Stainless Steel, Chrome Plated, Special Alloys, 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
» Applications: Pulp & Paper, Water Treatment, Beverage & Food, Fine Chemicals, Power Plants, Steel Industry, and more

Product Features

» Cast-in Guide Claws: Positioned at the port bottom, these guide claws replace traditional grooves, preventing valve clogging during shutoff while ensuring a tight seal. They push the gate toward the seat, enhancing the seal in the closed position.
» Integral Body Design: Facilitates easy assembly and ensures zero shell leakage.
» Full Port Design: Minimizes pressure drop and maximizes flow capacity.
» PTFE Resilient Points: Located against the gate to eliminate metal-to-metal contact between the gate and body.
» Compact Construction: The super-thin body design simplifies installation and reduces space requirements.
» Beveled Knife Edge: Provides strong cutting stress for easy flow penetration and tight sealing.
» Increased Gate Thickness: Allows customization for higher pressure applications.
» Replaceable Side-entry Seat: Reduces maintenance costs by enabling easy seat replacement.
» L-shape Seat Retainer: Locks the seat into the valve body and covers the seat side to prevent direct flow flushing.
» Stem Cover: Available to prolong the stem’s service life.
» Dual Thrust Bearings: Minimize operating torque for smoother operation.
» Grease Nipple: Facilitates easy bearing lubrication.