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

Product Name: Pneumatic Knife Gate Valve with Limit Switch
Type: Unidirectional Knife Gate Valve    
Body Material: ASTM A351 CF8M
Size: 10 Inch, DN250
Pressure: Class 150 LB, PN16
End Connection: Lug
Operation: Pneumatic Actuator with Limit Switches

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.