1. Wiring method for lead type explosion-proof solenoid valve: What is a lead type explosion-proof solenoid valve? Lead type means that a power line is led out from the inside of the explosion-proof coil housing, with a length of generally about 1.5 meters. Some of the outgoing lines can be extended at the factory. So, how to wire a lead type explosion-proof solenoid valve? Lead type is a three core wire: the three core wire is divided into yellow, red, (green/black/blue) colors (yellow is the ground wire, red, and green/black/blue is the power line), and the power line is not positive or negative.

There are many types of valves, but their basic function is to connect or cut off the flow of the medium. Therefore, the sealing problem of valves becomes very prominent. To ensure that the valve can effectively cut off the medium flow and prevent leakage, it is necessary to ensure that the valve seal is intact. There are many reasons that can cause valve leakage, including unreasonable structural design, defective sealing contact surfaces, loose fastening parts, and loose fit between the valve body and valve cover. All of these problems can lead to poor valve sealing, resulting in leakage problems.

A control valve is used to regulate the flow rate, pressure, and liquid level of the medium. According to the signal of the regulating part, automatically control the opening of the valve to achieve the regulation of medium flow rate, pressure, and liquid level. Regulating valves are divided into electric regulating valves, pneumatic regulating valves, and hydraulic regulating valves. The regulating valve consists of two parts: an electric actuator or a pneumatic actuator and a regulating valve. Regulation is usually divided into two types: straight through single seat and straight through double seat. The latter has the characteristics of high flow capacity, small imbalance, and stable operation, so it is usually particularly suitable for situations with high flow rate, high pressure drop, and low leakage

There are various types of electromagnetic directional valves, which can be divided into two position three-way, two position four-way, three position four-way, etc. according to the number of working positions and paths; According to their reset and positioning forms, they can be divided into spring reset type, steel ball positioning type, and non reset spring type; According to the connection form between the valve body and the electromagnet, it can be divided into flange connection and threaded connection; According to the structural form of the magnet it distributes, it can be divided into dry and wet types, each of which has AC, DC, and integral forms, and there are many types of required power supply voltage, so there are many differences in its structure.

Solenoid valve is a mechanical equipment operated by electromagnetic induction, which is used to adjust the direction, total flow, speed and other main parameters of materials in the industrial control system. Electromagnetic valves can cooperate with different power circuits to complete the estimated operation, and the coordination ability of the operation can be ensured.

The valve cylinder has directional and/or throttling functions. It has a compact structure, convenient use, reduces piping, shortens installation time, saves space, but the disadvantage is that the electromagnetic directional valve cannot be installed together, which is not conducive to management.