DK67-WB-G Pneumatic Cast Steel Hard Seal Triple Offset Butterfly Valve - Severe Service Isolation
The DK67-WB-G Pneumatic Triple Offset Butterfly Valve (TOBV) is engineered for maximum performance in the harshest industrial conditions. Built from robust Cast Steel, it offers superior strength and resilience compared to Cast Iron. The valve features a geometrically advanced Triple Offset structure and a Metal-to-Metal Hard Seal, ensuring bi-directional, zero-leakage shutoff even at extreme high temperatures, high pressures, and with abrasive fluids. Coupled with a powerful pneumatic actuator, this TOBV provides fast, reliable quarter-turn operation essential for critical isolation in refining, power generation, and petrochemical processes.
Features
A heavy-duty pneumatic triple offset butterfly valve with a hard seal, constructed from Cast Steel for high strength and designed for fast, zero-leakage isolation in high-temperature, high-pressure, and severe industrial services.
✅Zero-Leakage Triple Offset Design (TOBV): The advanced triple-offset geometry eliminates rubbing between the disc and the seat, minimizing wear and ensuring repeatable, genuine zero-leakage sealing performance (often Class VI equivalent).
✅Metal-to-Metal Hard Seal: Features a robust hard-seated seating surface, providing maximum resistance to thermal expansion, high velocities, erosion, and abrasive media, making it superior for high-temperature service.
✅High-Strength Cast Steel Body: Constructed from Cast Steel, offering greater pressure and temperature capacity and higher resistance to thermal shock compared to standard Cast Iron bodies.
✅Rapid Pneumatic Automation: The pneumatic actuator provides immediate, high-torque, quarter-turn actuation, crucial for fast-acting isolation and emergency shutoff (ESD) in demanding severe service pipelines.
✅Bi-Directional Sealing Integrity: Engineered to achieve tight shutoff regardless of the direction of flow, enhancing safety and reliability in critical systems where reliable 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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