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A New Revolution in Ultimate Sealing Pneumatic Knife Gate Valves

In pipelines handling solid particles, entangled fibers, and high-viscosity media, valve blockage often leads to frequent downtime, resulting in unpredictable production losses. The COVNA HK59-D-D pneumatic knife gate valve, with its innovative knife gate design, comprehensive material optimization, and multi-standard compatibility, completely breaks the performance constraints of traditional valves, bringing unprecedented stability and efficiency to challenging fluid conveying applications.

Innovative Knife Gate Structure: Precision Cutting, Eliminate Clogging

- Valve body constructed of high-strength cast steel, gate disc constructed of corrosion-resistant stainless steel
- Knife gate disc design penetrates solids and fibers in slurries, completely preventing sticking
- Compact and smooth flow path profile reduces media retention areas and optimizes flow velocity distribution

High-speed Pneumatic Actuation: More flexible response, safer and more reliable

- Double-acting (DA) and spring return (SR) options available to accommodate various fail-safe logics
- 20ms-level response speed significantly shortens switching cycles
- Modular air conditioning components with integrated filtration, pressure reduction, and lubrication extend device life

The finely tuned actuator, combined with a positioner, easily implements graduated opening control, providing a solid foundation for intelligent pipe networks.

Adaptable to Extreme Operating Conditions: Unafraid of Temperature and Pressure, Extended Service Life

- Operating Temperature Range: -29°C to 650°C
- Rated Pressure: 1.0MPa to 2.5MPa
- Optional PTFE or PPL Seat Packing for Mildly Corrosive Media

In a high-temperature steam pipeline at a chemical plant, the HK59-D-D valve has been operating stably year-round, without requiring secondary adjustments due to thermal expansion.

Multiple Standard Flanges: Zero Run-in on Global Projects

Supporting a variety of flange interfaces, including DIN, JIS, 10K, ANSI, and GOST, the valve can be instantly integrated into domestic and international engineering systems without requiring secondary modifications. Whether for new construction or retrofit projects, this significantly shortens delivery cycles.

Extensive Accessories: Customizable for a More Fit

- Solenoid Valves, Limit Switch Boxes, Positioners
- Air Filter Pressure Reducing Valve, Manual Bypass Device
- Emergency Lockout Device, Remote Monitoring Module

Each accessory set can be combined as needed to create a customized, lightweight valve upgrade.

Why choose the COVNA HK59-D-D?

1. Optimized materials for both strength and corrosion resistance
2. Compatible with multiple standards for seamless project integration
3. Modular actuators for easier maintenance
4. Proven in real-world applications, its stability has earned a strong reputation among users

COVNA not only delivers products but also provides integrated services from design and selection, testing, and on-site commissioning to ensure continuous and efficient operation under any operating conditions.


Post time: Aug-29-2025
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