Bonneted Knife Gate Valve KGVB – Sealing and Performance Under High Pressure

Optimized for demanding environments, the Flowrates bonneted knife gate valve is designed for high-pressure and high-temperature applications, ensuring maximum reliability for both liquids and gases.

Advantages of the KGVB Bonneted Knife Gate Valve

Unlike traditional knife gate valves, our design features a bolted bonnet, providing total sealing around the stem, rather than just around the gate. This enhances leak resistance and reduces fugitive emissions, making it ideal for gas, steam, and aggressive fluid applications.

Technical Features of the Bonneted Valve

  • Unidirectional (bidirectional option available on request)
  • Monobloc cast or welded body, ensuring robustness and durability
  • Self-cleaning seal system to minimize residue build-up and extend lifespan
  • High flow capacity with low pressure drop
  • Customizable materials and seals to suit fluid type, pressure, and temperature
Industrial bonneted knife gate valve for critical high-pressure applications

High Pressure Industrial Applications

  • Chemical and Petrochemical Industry – Isolation of aggressive fluids and high-pressure gases
  • Energy and Thermal Power Plants – Control of hot gases and superheated steam
  • Steel and Cement Industry – Management of combustion gases and abrasive fluids
  • Pulp & Paper and Effluent Treatment – Handling of slurries and industrial waste fluids

Why Choose Flowrates for Your Hydraulic Solutions ?

At Flowrates, we combine 15 years of expertise in industrial valves with a modern and digital approach. Our solutions are designed to deliver maximum precision and reliability, with the ability to configure your valve online using our exclusive configurator, ensuring unmatched responsiveness and customization.

Flowrates – Performance at the service of industry.

Dn : 40 to 1400

Body material : Ductile iron / Stainless steel CF8M / Steel A216WCB / Duplex

Disc materials : Stainless steel AISI316 / AISI 304 / Duplex

Seat materials : EPDM / NBR / Food-approved silicone / FKM / PTFE / Dynamic metal seat

Connection : Between flanges / Threaded connection / Flanged

Drilling : PN6 / PN10 / PN16 / ANSI 150 LBS / PN25 / jusqu’à PN100

Min Temperature : -40°C

Maximum temperature : +850°C

Maximum Pressure : 100 bars

Tightness : 100% tight with soft seat / Relative tightness with metal contact

Actuator :

Handwheel with rising stem / Handwheel with non-rising stem / Electric motor / Pneumatic cylinder / Hydraulic cylinder / Gearbox with handwheel

All these equipements are built, tested and set by our team of expers !

Options :

  • TA LUFT certification (standard related to fugitive emissions through the packing gland)
  • Flusshing ports
  • Reinforced retaining ring (Easy maintenance, seal can’t be strapped out, acts as a deflector)
  • Available in Unidirectional or Bidirectional tightness

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