Structure and application of common valves

valve

1. Gate valve: gate valve, also known as gate valve, gate valve, is a widely used valve. Its closing principle is that the sealing surface of the gate and the sealing surface of the valve seat are highly smooth, flat and consistent, which can prevent the medium from flowing through, and rely on the wedge of the top wedge, spring or gate to enhance the sealing effect.

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2. Stop valve and throttle valve:

Globe valve is a widely used valve. Its closing principle is that, depending on cyanotic pressure, the sealing surface of the valve disc and the sealing surface of the valve seat closely fit together to prevent the medium from flowing. Genius valve

Throttle valve (throttle valve) is also known as needle valve, the shape and stop valve are not different, but the shape of valve disc is different, the purpose is also different. It can adjust the flow and pressure by changing the channel area. There are two kinds of right angle type and straight through type, both of which are manual.

3. Ball valve: a ball valve that opens or closes the valve by rotating the spool. The spool of the ball valve is a ball with a hole. When the axis of the hole coincides with the axis of the inlet and outlet of the valve, the valve opens; when the two are vertical, the valve is closed.

4. Butterfly valve: a butterfly valve in which the disc is a disc that rotates around an axis in the seat. The angle of rotation is the opening and closing degree of the valve.