DN50-DN600 Knife Gate Valves

• Body: GG25
• Knife: SS304 Stainless Steel (Other Grades of stainless steel are also available)
• Packing Gland: Aluminum (AL)
• Seat: EPDM
• Support: Steel
• Retainer: SS316
• Packing: Synthetic + PTFE
• O-Ring: NBR
• Yoke: Steel
• Oil Hole: Steel
• Fixing Screw: Steel
• Hood: Steel
• Hood Cover: Plastic
• Stem: SS304 Stainless Steel (Other Grades of stainless steel are also available)
• Stem Nut: Bronze MS58
• Handwheel: Steel
• Washer: Brass
• Fixing Screw: SS304

• Blade-Like Gate: Cuts through thick materials.
• Simple Construction: Easy maintenance.
• Effective Sealing: Handles slurries and liquids.
• Bi-Directional Flow: Seals in both directions.
• Heavy-Duty: Abrasion and corrosion-resistant.
• Low Maintenance: Durable and cost-effective.
• Compact: Fits in tight spaces.
• Versatile: Used in various industries.

What are Knife Gate Valves?

A knife gate valve is designed to efficiently control the flow of liquids or solids through pipelines. It consists of a sharp-edged gate that can easily cut through slurry, pulp, or other thick fluids, ensuring smooth flow regulation. These valves are highly durable and are commonly used in industries where frequent maintenance or cleaning might be required due to the nature of the substances transported.

The Knife Gate Valve is designed for high performance in a wide range of demanding applications, from wastewater treatment to the pulp and paper industry. These valves come in various materials, types, and configurations to match the specific requirements of each use case.

Applications of Knife Gate Valves

Knife gate valves are highly versatile and are used in various industries that require the reliable flow control of thick, abrasive, or viscous materials. Some key applications include:

• Pulp and Paper Industry: In this sector, knife gate valves are used to control the flow of pulp, which can be thick and slurry-like. The knife gate valve’s sharp-edged design ensures efficient flow regulation even under challenging conditions.
• Wastewater Treatment: Knife gate valves are ideal for handling wastewater containing solids, sludge, and other contaminants. Their ability to cut through thick materials makes them a preferred choice for these applications.
• Chemical and Petrochemical Industries: Knife gate valves are used for handling chemical slurries, oil, and gas, where precision flow control is required. The stainless steel construction ensures the valve performs well even with corrosive substances.
• Mining Industry: These valves are also used in mining for the flow control of slurry and other materials in pipelines.

Advantages of Knife Gate Valves

• High Durability: Constructed from high-quality materials like stainless steel and cast iron, knife gate valves are built to last even under the most demanding conditions.
• Versatile Applications: Knife gate valves can handle a wide range of media, from liquids and slurries to solids, making them suitable for multiple industries.
• Easy Maintenance: The simple design of knife gate valves makes them easy to maintain and repair, minimizing downtime.
• Cost-Effective: Compared to other valve types, knife gate valves are relatively affordable, making them a popular choice for both small and large-scale operations.

Flange Standards and Specifications

Knife gate valves often come with flanged connections, and there are specific flange standards that are widely used:

• EN 1092-2 PN16 Flanges: These flanges are commonly used in industrial applications, providing a strong and secure connection between the valve and the pipeline. The PN16 pressure rating ensures the valve can withstand moderate to high-pressure applications.
• EN 1092-2 PN10 Flanges: These flanges are used in lower-pressure applications, and their design ensures compatibility with various pipe systems.

Conclusion

Knife gate valves are essential components for efficient flow control in industries dealing with thick, abrasive, or slurry-like materials. With their sharp-edged gates and durable construction, they are designed to handle the most challenging conditions. Whether you’re operating in the pulp and paper industry, wastewater treatment plants, or chemical processing facilities, knife gate valves offer the reliability, durability, and ease of use that is necessary for effective flow control.

At Jhy Group, we specialize in providing high-quality knife gate valves suitable for various industrial applications. Browse our full product line and download our product catalog to explore our extensive range of valves and related components.