Ductile Iron GGG40 Knife Gate Valves, DN300, PN10, Pneumatic

Key Specifications / Features

The Ductile Iron GGG40 Knife Gate Valve is a robust and versatile solution for bidirectional flow control. This valve features a 12-inch (DN300) diameter and a pressure rating of PN10 (Class 150 LB), making it suitable for various industrial applications. Its wafer ends design allows for easy installation and integration into existing systems. Equipped with a pneumatic actuator, it offers precise and reliable operation.

The maintenance-free, compact cross seal (double seal lip profile) guarantees tight shutoff and can be adjusted without interrupting the working process. The self-cleaning effect is achieved by flush-out corners in the body and the cutting edge underneath the gate. Solids and fibers are cut by the cutting edge before tightening against the elastic seat. The guidance of the gate is interrupted along the stroke length, allowing dirt to be ejected. Bidirectional shutoff is achieved by the lateral gate surfaces and the elastic seat integrated into the body. The seat is chambered and mounted under prestress. The high-quality finish of the guide and sealing surfaces on both sides ensures long service life and tight shutoff. Lateral guidance of the gate prevents fluttering in either flow direction or in throttling 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

Structural Diagram

Product Features

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