Product Description
- The gate knife valve, also known as the knife - gate valve, is a type of valve widely used in various industrial applications. It is designed to control the flow of fluids, including liquids, slurries, and powders.
- The valve gets its name from its unique gate design, which resembles a knife. This design allows for a straight - through flow path when the valve is fully open, minimizing pressure drop across the valve.
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Structure
- The main components of a gate knife valve include the body, the gate (knife - like plate), the stem, and the actuator (manual or automatic).
- The body of the valve is usually made of durable materials such as cast iron, stainless steel, or carbon steel, depending on the application requirements. For example, in corrosive environments, stainless steel is often preferred.
- The gate is precision - machined to ensure a tight seal when the valve is closed. It slides up and down within the valve body to control the flow.
- The stem connects the gate to the actuator and transmits the motion from the actuator to the gate.
Working Principle
- When the valve is in the open position, the gate is fully retracted, allowing the fluid to flow freely through the valve.
- As the valve is being closed, the gate moves downwards, gradually cutting off the flow path. The sharp edge of the gate helps to clean any deposits or debris on the valve seat as it closes, ensuring a good seal.
- In the fully closed position, the gate makes a tight seal against the valve seat, preventing any leakage of the fluid.
Advantage
- Low - pressure drop: Due to its straight - through flow design, the gate knife valve has a relatively low - pressure drop, which is beneficial for applications where energy efficiency is important.
- Good sealing performance: With proper maintenance, the valve can provide an excellent seal, making it suitable for applications where leakage is not acceptable, such as in chemical processing plants.
- Ability to handle slurries and powders: The design of the gate allows it to handle viscous fluids, slurries, and powders more effectively compared to some other valve types.
Applications
- Gate knife valves are commonly used in wastewater treatment plants, where they are used to control the flow of sludge and other waste materials.
- In the mining industry, they are used to handle slurries containing minerals.
- They are also widely used in the food and beverage industry for handling products such as syrups, sauces, and powders.
Performance Chart
Contact Us
Alex Yang
Hebei Minerco Machinery & Equipment Co.,Ltd.
No.12, Zhongshan Road, Mancheng District, Baoding, Hebei, China
Web:minercos.en.made-in-china.com
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