High Pressure Knife Gate Valve, A216 WCB, DN100, PN40, Wafer

Key Specifications / Features

The High Pressure Knife Gate Valve Manufacturer offers a robust bidirectional knife gate valve designed for demanding applications. Constructed from high-strength carbon steel ASTM A216 WCB, this 4-inch (DN100) valve features a PN40 pressure rating and Class 300 LB, ensuring it can handle high-pressure conditions. The wafer ends facilitate easy installation and integration into piping systems.

The maintenance-free compact cross seal with a double-lip profile ensures a reliable tight shutoff and can be adjusted without interrupting operation. A self-cleaning effect is achieved through flush-out corners in the body and a cutting edge beneath the gate. Solids and fibers are cut by the edge before the gate seals against the elastic seat. The gate guidance is interrupted along the stroke length, allowing dirt to be expelled. Bidirectional shutoff is provided by the lateral gate surfaces working in conjunction with the elastic seat integrated into the body. The chambered, pre-stressed seat enhances sealing performance, while the high-quality finish of the guide and sealing surfaces on both sides ensures long service life and consistent shutoff. Lateral guidance of the gate prevents flutter in either flow direction or during throttling.

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
» Flatness knife
» Light torque
» Support yoke
» Epoxy coating-Fusion bonded paint
» Sealing type