Introduction to gate valve

Gate valve
Gate valves are primarily designed to start or stop flow, and when linear flow and minimum flow limits are required. In use, these valves are usually fully open or fully closed.
After fully opening the disc of the gate valve, remove it. The disc is fully drawn into the bonnet. This leaves an opening for the inside diameter of the flow through the valve to be the same as the inside diameter of the piping system in which the valve is installed. Gate valves can be used for a variety of liquids and provide tight sealing when closed.

Construction of gate valve
Gate valve consists of three main parts: valve body, bonnet and trim. The body is usually connected to other equipment by flange, screw or welding. The hood with moving parts is usually bolted to the body for maintenance. Trim includes stem, gate, disc or wedge and seat ring.

Advantages and disadvantages of gate valve advantage:
Good closing function
gate valves are bi-directional so they can be used in both directions
minimum pressure loss through the valve
Disadvantages:
they cannot be opened or closed quickly
gate valves are not suitable for regulating or throttling flow
they are sensitive to vibration when open

The rubber sealing valve is manufactured by introducing advanced production technology from abroad and adopting the integral packaging plastic of ram. To overcome the general leakage or poor sealing effect of the valve. Phenomenon. The valve has a switch, light weight, reliable sealing, light weight and long service life. It can be widely used to cut off or regulate medium water, sewage, construction, petroleum, chemical industry, food, pharmaceutical, textile, electric power, shipbuilding, metallurgy, energy system, etc.
characteristic:
1. Light duty hearth seat with the same pipe bottom diameter. Design, no sludge, more reliable sealing.
2. The valve plate is coated with rubber of overall quality. The advanced vulcanization process allows the gate to ensure accurate geometry, rubber and ductile iron.
The whole body is solid, not falling.
3. The valve body adopts non-toxic epoxy resin coating with excellent performance. Corrosion resistance, prevent secondary pollution of water.
4. The friction of three rings of valve rod 0 is small, the switch is light, and there is no leakage
5. The body material is QT 450-10, with high strength, light weight and long service life. F, er.