Premium Super Duplex Knife Gate Valve supplied by African Valve for demanding industrial applications. We stock comprehensive specifications in multiple materials and sizes, available across Africa with expert technical support and fast delivery. Engineered for superior performance in oil & gas, petrochemical, power generation, and process industries.
Product Overview
Pressure Rating
Pressure Rating: Class 150-300 (PN16-PN40). Bidirectional: 150 PSI full differential. Unidirectional: 300 PSI. Super Duplex provides superior strength and corrosion resistance for abrasive slurries
Temperature Range
Service Temperature: -46°C to 300°C (-50°F to 572°F). Super Duplex maintains excellent mechanical properties and pitting resistance (PREN >40) across temperature range
Material Construction
Body: Super Duplex 2507 (UNS S32750) investment cast with 25% chromium
7% nickel
4% molybdenum
Gate: Super Duplex 2507 with hardened edges and precision ground sealing surfaces
Seats: Reinforced TFE with 316L backup
Stem: Super Duplex 2507 with Inconel 625 overlay
Seals: Viton FKM
Connection Type
End Connections: RF Flanged (ANSI B16.5), RTJ Flanged, Socket Weld (SW), Butt Weld (BW), NPT/BSP Threaded. Available in all standard flange ratings with flat face, raised face, and ring-type joint facings
Looking for more details?
View complete technical specifications in the Specifications tab, check out Features and Applications, or download product documentation from the Downloads tab.
$671.99