DN500 Knife Gate Valve, Ductile Iron, GGG40, Bidirectional

The China DN500 Knife Gate Valve Factory specializes in producing high-quality bidirectional knife gate valves. These valves feature a ductile iron GGG40 body, ensuring durability and reliability. With a size of 20 inches (DN500) and a pressure rating of PN10 (Class 150 LB), they are designed for robust performance in demanding industrial applications. The valves have wafer ends for convenient installation and are operated using a bevel gear, providing smooth and efficient control. These valves are ideal for applications requiring bidirectional flow and are suitable for handling media with solid particles.

Product Name: DN500 Knife Gate Valve, Bidirectional
Body Material: Ductile Iron GGG40
Size: DN500, 20 Inches
Pressure: PN10, Class 150 LB
End Connection: Wafer
Operation: Bevel Gear
Temperature Range: -29°C to 120°C

The maintenance-free compact cross seal, featuring a double seal lip profile, ensures tight shutoff and allows for adjustments without interrupting the working process. The self-cleaning effect is facilitated by flush-out corners in the body and a cutting edge beneath the gate. Solids and fibers are cut by this edge before the gate is tightened against the elastic seat. The gate's guidance is interrupted along its stroke length, enabling the ejection of dirt. Bidirectional shutoff is achieved through the lateral gate surfaces and the elastic seat, which is integrated into the body. The seat is chambered and prestressed-mounted. The high finish of the guide and sealing surfaces on both sides ensures long service life and tight shutoff. The lateral guidance of the gate prevents fluttering in either flow direction or in throttle positions.

Technical Specification

» 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

» Bidirectional
» Split Body
» Flat knife
» Light torque
» Support yoke
» Epoxy coating-Fusion bonded paint
» Sealing type