GGG40 Slurry Knife Gate Valve, DN300, PN10, 12 IN, Pneumatic

Product Name: GGG40 Slurry Knife Gate Valve
Size: DN300, 12 Inch
Pressure: PN10, Class 150 LB
Body Material: Ductile Iron GGG40
End Connection: Wafer
Operation: Pneumatic Actuator

The integral slurry valve features a full-bore design with a valve body flow channel entirely wrapped in wear-resistant polyurethane. This design prevents the flushing medium from coming into direct contact with the metal valve body, significantly extending the valve's anti-wear lifespan. The full-diameter flow channel matches the inner diameter of the pipeline, eliminating eddy currents and minimizing erosion. When fully open, the valve plate lifts into the valve chamber, avoiding direct exposure to the medium and further prolonging the disc’s service life.

Technical Specifications

» Nominal Diameter: NPS 2–24 Inch DN50–DN600)
» Design Pressure: PN10, PN16, Class 150 LB
» Temperature Range: -29°C to 120°C
» Working Pressure: 10.3 bar (150 PSI)
» Operating Pressure: 6.2 bar (90 PSI)
» Body Material: GGG40, ASTM A351 CF8, CF8M, 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

» Self-Cleaning Disc Function: The valve plate is equipped with an internal self-cleaning scraper within the sleeve. This feature automatically cleans the surface of the valve plate during operation, preventing material buildup and reducing the risk of       torque increase or blockage during switching.
» Integrated Elastomeric Filler: The integrated sealing filler is molded from wear-resistant, high-rebound rubber. It forms a tight seal with the stuffing box and polyurethane valve liner, enhancing sealing performance, extending service life, and              facilitating easier replacement.
» Self-Flushing Valve Seat Structure: The valve seat is designed with a self-flushing structure to prevent the sedimentation of slurry, ensuring zero leakage each time the valve is closed.
» Easy Seat Replacement: The removable valve seat and upper sealing structure allow for on-site replacements. If the liner or upper seal wears during service, these components can be replaced easily, restoring the valve to its original condition. The     cost of replacement is only 15-20% of the entire valve, making maintenance cost-effective.