Open and close the air circuit. When valve 1 and valve 4 are closed, and valve 2 is opened, the mechanical vacuum pump III vacuums container I, and the air ...

Strength performance The strength performance of the valve refers to the ability of the valve to withstand the pressure of the medium. The valve is a ...

The valve stem is reliable in sealing. Because the valve stem is only used for imitating rotation and not lifting, the packing seal of the valve stem is ...

The maximum stem diameter allowed by the electric butterfly valve device cannot pass through the stem of the equipped valve. Stem diameter: for multi-turn type ...

Nominal diameter: (nominal diameter), also known as the mean outside diameter, represents the symbol DN, which is the general diameter of various pipes and ...

The correct selection of valve model and specifications requires understanding of the method of preparing vacuum valve models; the method of preparing vacuum ...

Ordinary electric butterfly valve is an angular displacement valve whose angular displacement is proportional to the input current. Therefore, its mathematical ...

Overview: Part of the rotary valve electric actuator mechanism is suitable for butterfly valves, ball valves, plug valves and other 90-degree angular ...

The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be opened and closed quickly ...

Electromagnetic vacuum belt inflation valve and electromagnetic vacuum differential pressure valve are vacuum valves specially used to prevent mechanical ...