Solenoid Industrial Valves is used to control the direction of the fluid automation components, belonging to the actuator; Is typically used for mechanical control and industrial valves, to control the direction of the medium, so as to achieve control of the Industrial Valves switch. Solenoid valve has closed cavity, open a hole in different position, every hole leads to different tubing, cavity valve is among, both sides are two electromagnets, which face the magnet coil electricity valve will be attracted to which side, by controlling the movement of the valve body blocked or leakage of different discharge of oil hole, and the oil hole is always open, hydraulic fluid will enter the different oil drain, and then through the oil pressure to push the cylinder piston, piston drives the piston rod, piston rod drive mechanism. So that by controlling the electric current of the electromagnet to control the mechanical movement. Only the electromagnetic valve is applied to seal in the electric control valve electric magnetic magnetic separation tube core completion, there is no dynamic seal, so leakage blocking off easily. Electric valve torque control is not easy, easy to produce internal leakage, even to break the stem head; Within the structure is easy to control electromagnetic valve leakage, until reduced to zero. So, electromagnetic valve using a special security, especially suitable for corrosive, toxic, or high and low temperature medium. Electromagnetic valve itself has simple structure, low price, compared with the control valve and other kinds of actuators is easy to install and maintain. More significant is composed of automatic control system is much simpler, much lower prices. Because the electromagnetic valve is switch signal control, connection with industrial control computer is very convenient. In today's computers, prices plunged, the advantage of the solenoid valve is more obvious. Main features: applicability of electromagnetic valve is used in the fluid must be and pipeline series model calibration in the medium. Electromagnetic valve is used in the fluid temperature must be smaller than the calibration temperature. Solenoid valve to allow the liquid viscosity, generally under 20 CST, more than 20 CST shall be indicated. Working pressure difference, line the high-pressure difference in less than 0. 04 mpa should be chosen as ZS, 2 w, ZQDF, ZCM series and type of moving step by step straight acting; The minimum working pressure difference is greater than zero. 04 mpa when guiding type (optional Differential pressure type) Electromagnetic valve; Maximum working pressure difference should be less than the biggest calibration pressure solenoid valve; General solenoid valve is a one-way work, so should pay attention to whether there is a pressure difference, install the check valve. Fluid cleanliness is not high when the filters should be installed in front of the solenoid valve, general solenoid valve is better claim to medium cleanness. Pay attention to the traffic pore size and diameter; Two solenoid valve usually only switch control; Conditions permit, please install bypass pipe, easy maintenance; When there is water hammer to customize solenoid valve opening and closing time to adjust. Pay attention to the environmental temperature on the influence of electromagnetic valve power supply current and power consumption should be selected according to the output capacity, power supply voltage generally allow & plusmn; About 10%, must pay attention to communication when starting the VA value is higher. Second, the reliability of electromagnetic valve normally open and normally closed; General selection normally closed type, electric open, power is shut down; But when opened for a long time closed in very short time to choose the normally open type. Life test, the factory generally belongs to the type testing project, specifically our country also do not have the major of the solenoid valve, import so careful when choosing solenoid valve manufacturer. Action time is very short at high frequency generally choose straight acting, large-caliber choose fast series. Three, security, general solenoid valve is not waterproof, when conditions are not allowed to use waterproof model, the factory can be customized. Nominal pressure solenoid valve of the highest calibration must be more than the highest pressure in the pipeline, otherwise life will shorten or other unexpected circumstances. Corrosive liquid should be chosen in all stainless steel type, appropriate chooses the corrosive fluid plastic king ( SLF) Solenoid valve. Explosive environment must choose corresponding explosion-proof products. Four, economy there are a lot of solenoid valve can be universal, but are able to meet the above three points should be chosen on the basis of most economic products. 1 installation and maintenance, when installation should pay attention to the arrow on the valve body shall be consistent with the medium flow direction. Not in a direct drop or splashing water. Solenoid valve should be installed vertically up. 2, the electromagnetic valve should guarantee for 15% of the rated voltage in power supply voltage Normal work within 10% range. 3, the electromagnetic valve is installed, the pipe can not have reverse pressure difference. Several times and electricity, and make it warm rear can put into use. 4, the electromagnetic valve before installation should be thoroughly clean the pipe. Access into the medium should be without impurities. The front loading filters. 5, when the electromagnetic valve failure or cleaning, in order to ensure the system continues to run, should install bypass device. 6, takeover attention, sealing material do not use too much, such as threaded connection, the takeover of external thread length is not more than, electromagnetic valve, effective length of internal thread and outer thread front half pitch with file chamfering, since thread 2 teeth in sealing tape, or excessive seal tape or adhesive residue into the lumen of the electromagnetic valve will cause failure. 7, in the pipes under the condition of insufficient rigidity or water hammer, recommend to use before and after the Industrial Valves pipe fixed bracket or any other way, when the solenoid valve work in case caused by vibration. 8, the electromagnetic valve is installed on inspection preparation test process is complete, must pass into the fluid movement 3 ~ 5 times, confirmed rear can put into normal use. 9, associated with the electromagnetic valve power supply control circuit and the facilities, such as relays, switches and contactor should be connected firmly, can not have loose or vibration, the electric circuits of the line to access the corresponding insurance, as the electric circuit protection, otherwise will affect the normal work of the solenoid valve or damaged.
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