Pneumatic Knife Gate Valve, GGG40, DN350, PN10, 14 IN, CL150

Product Name: Pneumatic Knife Gate Valve, Bidirectional
Body Material: Ductile Iron GGG40
Size: DN350, 14 Inch
Pressure: PN10, Class 150 LB
End Connection: Wafer
Operation: Pneumatic Actuator

The maintenance-free, compact cross seal with a double-seal lip profile ensures a reliable tight shutoff and can be easily adjusted without disrupting operations. A self-cleaning effect is facilitated by flush-out corners in the valve body and a cutting edge beneath the gate. Solids and fibers are sheared by the cutting edge before the gate seals against the elastic seat, effectively preventing clogging. The gate's guidance is temporarily interrupted during the stroke, allowing debris to be expelled.

Bidirectional shutoff is achieved through the lateral gate surfaces and the elastic seat, which is integrated into the body. The seat is chambered and pre-stressed for enhanced performance. Both the guide and sealing surfaces are finely finished to provide long-lasting, tight shutoff. The lateral guidance of the gate prevents fluttering in either flow direction or during throttling, ensuring smooth and reliable operation.

Technical Specifications

» 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