Structure of Gate Valve

Gate valve is a common fluid control valve with simple structure and easy use. It is widely used in various industrial fields. This article will introduce the structure, characteristics, principles and other aspects of the gate valve.

1. Structure of gate valve

The main structure of the gate valve includes the valve body, valve disc, valve stem, sealing surface, packing and other parts. Among them, the valve body is the main part of the gate valve, usually made of cast iron, cast steel, stainless steel and other materials. The valve disc is a key component of the gate valve. It is usually made of cast iron, cast steel, stainless steel and other materials. Its shape is rectangular or trapezoidal and can move up and down along the guide groove of the valve body. The valve stem is the component that connects the valve disc and handle, and is usually made of stainless steel. The sealing surface is the sealing part between the valve disc and the valve seat, usually made of rubber, polytetrafluoroethylene and other materials. Packing is a material filled between the valve stem and the valve body, usually made of persimmon tree ointment, polytetrafluoroethylene and other materials.

2. Characteristics of gate valves

1. Simple structure and easy to use. The gate valve has a simple structure, is easy to maintain and is easy to use.

2. Good sealing performance. The sealing surface of the gate valve is made of rubber, polytetrafluoroethylene and other materials, and has good sealing performance.

3. Small flow resistance. The valve channel of the gate valve is straight, with small flow resistance and large flow rate.

4. Wide range of application. Gate valves are suitable for various fluid media, including water, oil, gas, etc.

5. Good corrosion resistance. Gate valves are usually made of cast iron, cast steel, stainless steel and other materials, and have good corrosion resistance.

3. Principle of gate valve

The principle of the gate valve is to control the flow of fluid by moving the valve disc up and down. When the valve disc moves upward, the fluid channel is opened and fluid can flow through the valve; when the valve disc moves downward, the fluid channel is closed and fluid cannot flow through the valve. The sealing surface of the gate valve is made of rubber, polytetrafluoroethylene and other materials, which can ensure the sealing of the valve.

4. Application of gate valve

Gate valves are widely used in various industrial fields, including petroleum, chemical industry, metallurgy, electric power, water conservancy, etc. In petroleum, chemical, metallurgy and other industries, gate valves are usually used to control high-temperature, high-pressure fluid media; in electric power, water conservancy and other industries, gate valves are usually used to control water flow, steam and other media.

In short, the gate valve is a fluid control valve with simple structure, easy use, good sealing, small flow resistance and good corrosion resistance. It is widely used in various industrial fields.