Weituo Weituo Fluid Equipment WATO Wuhan Weituo Fluid Control Equipment Co., Ltd.

The opening and closing part of the gate valve is a gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. There are also many types of gate valves. According to the material, it can be classified into cast iron gate valve, cast steel gate valve, stainless steel gate valve and so on. According to the transmission mode, it can be divided into manual gate valve, electric gate valve, pneumatic gate valve and so on. According to the connection mode, it can be divided into flange gate valve, welded gate valve and so on.

flange gate valve has the following advantages:

1. The fluid resistance is small, and the sealing surface is less brushed and corroded by the medium.

2. It saves effort to open and close.

3, the medium flow direction is not restricted, does not disturb the flow, and does not reduce the pressure.

4. Simple shape, short structure length, good manufacturing technology, and wide application range.

The disadvantages of 　　 flange gate valve are as follows:

1. It is easy to cause erosion and scratches between the sealing surfaces, and it is difficult to maintain.

2. The size is large, it needs a certain space to open, and the opening and closing time is long.

3. The structure is more complicated.

Flange gate valve installation and maintenance should pay attention to the following matters:

1. Handwheels, handles and transmission mechanisms are not allowed to be used for lifting, and collisions are strictly prohibited.

2. The double gate valve should be installed vertically (that is, the valve stem is in the vertical position and the handwheel is on the top).

3. The gate valve with a bypass valve should be opened before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).

4. The gate valve with transmission mechanism should be installed according to the product manual.

5. If the valve is frequently opened and closed, lubricate at least once a month