Do you know how to choose a valve electric device?

Strength and performance: The strength performance of the valve electric device refers to the ability of the valve to withstand the medium pressure, the valve is a mechanical product that can withstand internal pressure, so it must have sufficient strength and rigidity to ensure that the valve electric device will not be used for a long time without deformation or rupture.

Sealing performance: The sealing performance of the valve electric device refers to the ability of each sealing part of the valve to prevent the leakage of the medium, which is the most important technical performance index of the valve, the three sealing parts of the valve electric device are: the contact between the opening and closing parts and the two sealing surfaces of the valve seat, the fit between the packing material and the valve stem and the packing box, the connection between the valve body and the valve cover, of which the leakage of the former is called internal leakage, which is usually said to be not tightly closed, which will affect the ability of the valve to cut off the medium, and the leakage of the last two places is called external leakage, that is, the medium leaks from the inside of the valve to the outside of the valve. Leakage will cause no material loss, and accidents will also occur when the environment is seriously polluted.

Flow medium: The medium flows through the valve after the pressure loss will occur, that is, the valve has a certain resistance to the flow of the medium, the medium to overcome the resistance of the valve to consume a certain resistance, from the perspective of energy saving, the design and manufacture of valve electric device should reduce the resistance of the valve to the flow medium as much as possible.

Opening and closing speed: The opening and closing speed is expressed by the time required for the valve electric device to complete an opening or closing action, generally there is no strict requirement for the opening and closing speed of the valve, a few require rapid closing or opening to prevent accidents, and there are also requirements for slow opening or closing of Party B to produce water hammer, etc., which should be carefully considered when choosing the type of valve electric device.

Service life: Life indicates the durability of the valve electric device, which is considered to be the important performance indicator of the valve electric device and has great economic significance. It is usually expressed in terms of the number of openings and closures that guarantee the sealing requirements, and of course it can also be expressed in terms of time.