Flanged Slurry Knife Gate Valve, Ductile Iron GGG40, 4 Inch

Product Name: Flanged Slurry Knife Gate Valve
Body Material: Ductile Iron GGG40
Size: 4 Inch, DN100
Pressure: Class 150 LB, PN16
End Connection: Flanged
Operation: Pneumatic Actuator

The Integral Slurry Valve is a full-bore type valve designed to handle abrasive and corrosive slurries. The valve body flow channel is entirely wrapped in wear-resistant polyurethane, which prevents the flushing medium from coming into direct contact with the metal valve body. This design significantly extends the valve body's anti-wear life. The full-diameter flow channel aligns with the inner diameter of the pipeline, reducing erosion by preventing eddy currents. When fully open, the valve plate lifts into the valve chamber, avoiding direct contact with the medium, thereby extending the service life of the disc.

Technical Specifications

» Nominal Diameter: NPS 2–24 Inch DN50–DN600)
» Design Pressure: PN10, PN16, Class 150 LB
» 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
» Temperature Range: -29°C to 120°C

Product Features of Integral Slurry Valve

» Self-Cleaning Function of Disc: The valve plate is equipped with a built-in self-cleaning scraper inside the sleeve. As the valve plate moves, it automatically cleans its surface, preventing clumping and reducing switch torque or potential blockages.
» Integrated Elastomeric Filler: The valve features an integrated sealing filler made from wear-resistant, high-rebound rubber. This filler tightly seals with the stuffing box and polyurethane valve liner, ensuring better sealing, a longer lifespan, and easier replacement.
» Self-Flushing Structure of Valve Seat: The self-flushing design of the valve seat prevents sediment buildup from slurry at the bottom, guaranteeing 100% zero leakage every time the valve is closed.
» Easy Seat Replacement: The valve is designed with a removable valve seat and upper sealing structure. If the liner or upper seal becomes worn, these components can be replaced on-site, restoring the product to its original service life at only 15-20% of the cost of a full replacement.