Product Name: Ductile Iron Knife Gate Valves
Type: Bidirectional Knife Gate Valve
Body Material: Ductile Iron GGG40
Size: DN150, 6 Inch
Pressure: PN10, Class 150 LB
End Connection: Lug
Operation: Pneumatic Actuator
The Cast Iron Bidirectional Knife Gate Valve is a unidirectional wafer-style knife gate valve designed for on-off operation in industrial pipelines. Its body and seat structure are engineered to prevent clogging during shutoff when handling media with fine particles. The beveled knife edge ensures the gate can easily cut through thick media. Depending on the working conditions, this valve is available in both non-rising stem and rising stem configurations.
Technical Specifications
» Nominal Diameter: NPS 2–16 Inch (DN50–DN400)
» Design Pressure: PN10, PN16, Class 150 LB
» Temperature Range: -29°C to 120°C
» Max Working Pressure:
DN50–DN250: 10 bar
DN300–DN450: 7 bar
DN500–DN600: 4 bar
» Body Material: GGG40, ASTM A351 CF8, CF8M, Special Alloys, etc.
» Disc Material: Stainless Steel, Chrome Plated, Special Alloys, etc.
» Seat Material: EPDM (120°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
» Operation: Manual, Pneumatic, Electric, Hydraulic
Product Features
» Integral Body Design: Ensures easy assembly and eliminates shell leakage.
» Full Port Design: Minimizes pressure drop and maximizes flow capacity.
» Cavity-Free Bore: Prevents particle accumulation within the valve body.
» Beveled Knife Edge: Provides strong cutting stress for easy flow penetration and tight sealing.
» Customizable Gate Thickness: Can be increased to accommodate higher pressure applications.
» Polished Gate Surface: Both sides of the gate are well-polished for a tight seal and reduced risk of jamming.
» U-Shaped Elastomer Seat: Provides a peripheral seal along the gate edge, ensuring tight sealing in both flow directions.
» Stem Cover: Available to extend the service life of the stem.
» Dual Thrust Bearings: Minimize operating torque for smoother operation.
» Grease Nipple: Facilitates easy bearing lubrication for long-term performance.