DK67-FB-G Pneumatic Hard Seal Triple Offset Flanged Butterfly Valve - High-Performance Isolation
The DK67-FB-G Pneumatic Triple Offset Butterfly Valve (TOBV) is the top choice for severe service applications requiring absolute isolation under extreme conditions. It features a Hard Seal (Metal-to-Metal) design and the geometrically superior Triple Offset structure, ensuring zero-leakage shutoff even at high temperatures, high pressures, and with abrasive media. The robust flanged body provides critical stability. Coupled with a powerful pneumatic actuator, this valve delivers fast, reliable quarter-turn operation for critical shutoff in power generation, refining, and petrochemical processes.
Features
A heavy-duty pneumatic triple offset butterfly valve with a metal-to-metal hard seal, providing fast, automated, zero-leakage isolation for severe high-temperature, high-pressure, and critical industrial services.
✅Zero-Leakage Triple Offset Design (TOBV): The advanced triple-offset geometry ensures that the disc only contacts the seat at the final point of closing, eliminating friction, minimizing wear, and providing genuine, repeatable zero-leakage (ANSI/FCI 70-2 Class VI equivalent) shutoff.
✅Hard Seal (Metal-to-Metal) Capability: Features a hard-sealed seating surface, offering extreme resistance to temperatures, high pressures, and erosion from abrasive particles or coking, where soft-seated valves would quickly fail.
✅High-Speed Pneumatic Control: The pneumatic actuator provides immediate, high-torque, quarter-turn actuation, crucial for fast-acting isolation and emergency shutoff (ESD) in severe service pipelines.
✅Robust Flanged Connection: The flanged connection ensures a secure, high-integrity, and stable seal to the pipeline, maintaining alignment and safety under the stress of high pressure and temperature cycling.
✅Bi-Directional Sealing: The design typically allows for tight shutoff regardless of the flow direction, enhancing reliability in critical processes where backflow prevention is necessary.
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Industry Applications
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Water Treatment
Chemical dosing (chlorine, pH adjusters), filtration systems -
Chemical Processing
Acid/alkali transfer, solvent blending lines -
HVAC Systems
Chilled water control, heat recovery units -
Aquaculture
Seawater flow diversion, ozone injection -
Plating Plants
Electrolyte management, waste neutralization
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