Concealed stem knife gate valve

Product Overview

The Bonnet Knife Gate Valve is a rugged, high-performance valve designed for isolating and controlling the flow of slurries, solids, and other difficult media. It is widely used in industries such as mining, wastewater treatment, pulp and paper, and chemical processing. The valve combines the cutting power of a knife gate with the enhanced sealing performance of a bonnet design, making it ideal for handling corrosive, viscous or abrasive materials.

The bonnet type design ensures superior sealing, prevents leakage and protects the valve interior from harsh external environments. The bonnet blade is specially designed to cut through slurries, viscous fluids and fluids containing solid particles while maintaining an excellent seal. This makes bonneted knife gate valves very effective in applications where isolation and flow control are required in harsh conditions.

Available in sizes up to DN 1800, the valves are suitable for a wide range of large applications and offer flexibility in design and operation to suit a variety of industrial needs.

Product Characteristics

Bonnet Design: Bonnet construction enhances the sealing performance of the valve. The bonnet provides additional support for the stem and gate mechanism, effectively isolating the interior of the valve from external pressures, contaminants, and corrosives while maintaining leak-free operation. This design is ideal for systems where external pressure or leakage prevention is critical.

KNIFE GATE VALVE BLADES: Knife gate valve blades are designed to cut through slurries, viscous fluids and solids with ease. The gate is typically made of stainless steel or other wear-resistant materials to ensure long service life and minimal wear even in abrasive applications.

Durable Materials: The valve body and bonnet are typically made of cast iron, carbon steel, or stainless steel, providing excellent resistance to corrosion, erosion, and impact damage. This makes the valves durable and reliable in harsh industrial environments.

RELIABLE SEALING: The bonnet design ensures zero leakage by providing a solid seal between the valve body and bonnet. This is especially important to prevent leakage in systems handling corrosive or hazardous media.

Standardized design: The valves are available in a wide range of sizes and pressure ratings and comply with international standards for easy integration into existing piping systems. The bonneted knife gate valve can be configured with a variety of actuators, such as manual, electric or pneumatic, to meet different operational requirements.

Wide range of connection options: bonneted knife gate valves offer a wide range of connection options, including flanged, clamped or lugged connections, for flexible installation in a variety of piping systems.

Product Advantages

Enhanced sealing performance: The bonnet design ensures high quality sealing performance and prevents leakage in demanding applications.

Resistance to abrasion and corrosion: The valves are made of durable materials such as stainless steel and carbon steel, providing excellent resistance to abrasive and corrosive media.

Low Maintenance: Knife gate valves are designed to be easy to maintain and operate, with fewer moving parts and a simple structure that minimizes downtime.

Bi-directional flow control: The valve effectively manages bi-directional flow and is suitable for different piping configurations.

Flexible operation: the valve can be equipped with manual, pneumatic or electric actuators, which can be operated flexibly according to specific application requirements.

Leak-free operation: Bonnet design ensures zero leakage, ensuring reliable performance in systems handling hazardous or critical fluids.