1. External leakage is blocked, internal leakage is easy to control, and safety is safe to use.
Internal and external leakage is an essential element of safety. Other self-control valves typically extend the valve stem and control the rotation or movement of the spool by an electric, pneumatic, hydraulic actuator. This must solve the problem of external leakage of the long-acting valve stem dynamic seal; only the electromagnetic valve is applied by the electromagnetic force on the iron core sealed in the magnetic isolation valve of the electric control valve, there is no dynamic seal, so the external leakage is easy to block . The electric valve torque control is not easy, it is easy to produce internal leakage, and even the stem of the valve stem is broken; the structure of the electromagnetic valve is easy to control the internal leakage until it drops to zero. Therefore, solenoid valves are particularly safe to use, especially for corrosive, toxic or high temperature media.
2, the system is simple, then pick up the computer, the price is low
The solenoid valve itself is simple in structure and low in price, and is easy to install and maintain compared to other types of actuators such as regulating valves. What's more remarkable is that the self-control system is much simpler and the price is much lower. Since the solenoid valve is controlled by the switching signal, it is very convenient to connect with the industrial computer. In today's era of computer popularization and price drop, the advantages of solenoid valves are even more obvious.
3, the action express, the power is small, the shape is light
The solenoid valve response time can be as short as a few milliseconds, even a pilot solenoid valve can be controlled in tens of milliseconds. Due to the self-contained loop, it is more sensitive than other self-controlled valves. The well-designed solenoid valve has low power consumption and is an energy-saving product. It can also be used to trigger the action and automatically maintain the valve position. It usually consumes no power at all. The solenoid valve has a small size, which saves space and is light and beautiful.
4, adjustment accuracy is limited, suitable for media restrictions
Solenoid valves usually only have two states of switching. The spool can only be in two extreme positions and cannot be continuously adjusted, so the adjustment accuracy is also limited.
Solenoid valves have high requirements on the cleanliness of the medium. Granular media cannot be used. If it is an impurity, it must be filtered first. In addition, viscous media is not suitable, and the viscosity range of the medium for a particular product is relatively narrow.
5, various models, a wide range of uses
Although the solenoid valve is inherently insufficient, the advantages are still outstanding, so it is designed into a wide variety of products to meet a variety of needs, and is extremely versatile. The advances in solenoid valve technology are also centered on how to overcome the inherent deficiencies and how to better develop their inherent advantages.