Full PU Lined Knife Gate Valve, GGG40, 8 Inch, 150 LB, DN200

Key Specifications / Features

The Full PU Lined Knife Gate Valve, featuring a ductile iron GGG40 body, is designed for robust performance and durability. With an 8-inch (DN200) size and rated for pressure class 150 LB (PN16), this valve ensures reliable operation in both directions, making it bidirectional. The polyurethane (PU) lining enhances its resistance to abrasion and improves sealing. Equipped with wafer ends, it offers secure, leak-proof connections.

Our Polyurethane Full-Lined Slurry Knife Gate Valves are designed for bi-directional tight on-off service in abrasive slurry applications. The wear resistance of polyurethane is 8 times that of carbide, 7 times that of vulcanized rubber, and 3 times that of ultra-high-molecular-weight polyethylene. Polyurethane excels in wear resistance against solid particles, leveraging its elasticity and superior mechanical properties to absorb particle impact and minimize wear and tear.
We have combined polyurethane with valve technology in a new design that significantly extends valve life. The valve is fully lined with wear-resistant polyurethane, injected in a single mold, ensuring all media are enclosed within the polyurethane lining. This provides comprehensive wear protection and 100% positive shutoff of abrasive slurries, making the valves ideally suited for mining applications.

Technical Specification

» Normal Size Range: NPS 2-24 Inch (DN50-DN600)
» Normal Pressure Rating: PN6-PN16, Class 150 LB
» Connection Type: Wafer type
» Seat and Lining Material: Polyurethane (PU)
» Body Material: GGG40, ASTM A216 WCB, A351 CF8, CF8M, Special Alloy, etc.
» Pressure Test Standards: GB/T 13927, MSS SP-81
» Face-to-Face Dimensions: GB/T 12221, MSS SP-81
» Operation Methods: Handwheel, Lever, Bevel Gear, Chain Wheel, Pneumatic, Electric
» Service Temperature: -20°C to 80°C

Product Features

» Bi-directional Flow: Zero leakage and shut-off, allowing valves to be installed in either direction.
» Integral Flange Seals: Polyurethane lining includes integral flange seals, eliminating the need for flange gaskets during installation.
» Replaceable Resilient Seats: Easily replaceable after removing the valve from the line.
» Full-Round Port: High flow capacity with minimal pressure drop.
» Wear-Resistant Valve Plate: Uses wear-resistant stainless steel plate with various types of surface treatments for enhanced durability.