Jiangsu Bell flange cast steel electric gate valve intelligent switch type

Jiangsu Bell flange cast steel electric gate valve intelligent switch typeThe main performance advantages of are:

1The valve has low fluid resistance. Due to the straight through valve body of the gate valve, the flow direction of the medium does not change, so the flow resistance is smaller compared to other valves.

2The sealing performance is better than that of a globe valve, and the opening and closing are also easier than that of a globe valve.

3Widely applicable, in addition to steam, oil and other media, it is also suitable for media containing granular solids and high viscosity, as well as for use as vent valves and valves in low vacuum systems.

4Gate valves are dual flow valves that are not restricted by the flow direction of the medium, making them suitable for pipelines where the flow direction of the medium may change, and also easy to install.

Jiangsu Bell flange cast steel electric gate valve intelligent switch typeGate valves use the up and down lifting of the valve stem to drive the opening and closing of the gate plate. The transmission thread of a rising stem gate valve is located at the top of the valve stem bracket, so the opening and closing position of the gate plate can be determined by the position of the valve stem. The transmission thread is also convenient for daily lubrication and maintenance, and is not corroded by fluids. The disadvantage is that it requires a relatively large installation space.

The transmission thread of the concealed stem gate valve is located inside the valve body, saving space for the valve stem bracket, thus reducing the overall height of the valve. For those that require clear opening and closing positions, an opening and closing scale can be installed above the valve cover, which is suitable for the sewer below(Underground concealed gate valve)Places with narrow spaces such as pipe trenches, or places with high dust content.

Gate valves can also be classified into different types based on different materials, pressures, seals, and connection methods.

There are two types of gate valves: rising stem gate valves and hidden stem gate valves. According to the sealing surface configuration, it can be divided into wedge gate valve and parallel gate valve,Wedge gate valve can be divided into:Single gate type, double gate plate type, and elastic gate plate type; Parallel gate valves can be divided into single gate plate and double gate plate.

Most gate valves use forced sealing,When the gate valve is closed,The sealing surface can be sealed solely by the pressure of the medium,Relying solely on the pressure of the medium to press the sealing surface of the gate towards the valve seat on the other side to ensure the sealing of the sealing surface. When the valve is closed, it is necessary to rely on external force to forcefully press the gate plate against the valve seat,To ensure the sealing performance of the sealing surface. This is self sealing.

Transform rotational motion into linear motion through the nut at the top of the valve and the guide groove on the valve body,The gate of a gate valve moves in a straight line with the valve stem, also known as a rising stem gate valve)There are usually trapezoidal threads on the lifting rod. That is to say, converting the operating torque into the operating thrust. When the lifting height of the gate is equal to the valve diameter11At double the time, the fluid channel is unobstructed, but during operation, this position cannot be monitored. In actual use, the vertex of the valve stem is used as a marker.