●General principles

一. Security : the attention of security will lead to disaster!

1. Corrosive media : Wang to use plastic solenoid valve and the entire stainless steel; For the medium-corrosion must choose isolation diaphragm. CCF cases .. Neutral medium, it would be useful to use copper alloy shell material for the valve solenoid valve, and the valve shell litter often rust particles. action is not particularly frequent occasions. Ammonia is used valve can not be used copper.
     2. Explosive environment : must use the corresponding explosion grade products, open installation or more occasions dust should use waterproof, dust varieties.
     3. Electromagnetic valve seating should be more than pipe maximum working pressure.

二. Applicability : not applicable to fees from money, but also more trouble!

1. Media Properties

1.1Media is gas, liquid or mixture of different varieties were selected to the solenoid valve.
     1.2Medium temperature to be elected in solenoid valve within the permissible range, it will be burned coil, seals aging, seriously affecting life fate.
     1.3Medium viscosity, usually in 50cSt below. If more than this value, solenoids for special orders.
     1.4Cleanliness media should not high before the solenoid valve fitted with filtration valve, Low pressure fashion can choose straight diaphragm solenoid valve for the wild, for example.
1.5If directional flow of media, and not allow the clock back should use one-way solenoid valve.

2.Pipeline parameters

2.1According to media flow requirements and pipeline to choose valve vents and models.
     2.2According flow and the valve Kv selected nominal value Path, with the optional diameter pipeline. Please note that some manufacturers did not have the Kv value, often valve hole diameter is less than interface, and must not seek the lowest delays.
     2.3Work pressure; The minimum working pressure is 0.04Mpa more indirect selection Pilot; minimum working pressure of less than or close to zero must use straight - or step-by-step Direct.

3.Environmental conditions

3.1Environment minimum and maximum temperature should be elected within the permissible range, if ultra-poor need special orders made.
     3.2Environment of high relative humidity and rain water drops, and so on, to be elected Waterproof solenoid valve
     3.3Environment regular vibration, and shock jolt to be elected special occasions varieties, such as marine solenoid valve.
     3.4In a corrosive or explosive use of the environment should be given priority in accordance with security requirements choose a corrosion-resistant

4.Power conditions

4.1Under the power supply types were selected exchanges and DC solenoid valve. In general AC power convenience.
     4.2Voltage specifications used as preferred AC220V, DC24V.
     4.3Supply voltage fluctuations in the exchange usually choose +%10%.-15%, DC Allow ± %10 around, if a discrepancy Regulators should take measures to make special orders or requests.
     4.4Power should be based on the rated current capacity of choice and power consumption. Starting to pay attention to the exchange of high value when AV, inadequate capacity, priority should be chosen indirectly guided electromagnetic valve.

5.Leakage

Sample given by the leakage of common economic numerical grading, if such high requests for special orders.

三、Reliability : unreliable will damage the entire system.

1、Working life, this is not included in the factory pilot project is a pilot project type. To ensure the quality of the formal election should manufacturers of brand-name products.
     2、Work system : long working hours, short-term repeated short-time working and working three. The company conventional products are long-term work that the system of allowing long-energized coil work. For a long time the valve opened only short-term closure of the, often choose to open solenoid valve. Short-term work with the system and has great mass, for special orders to reduce power consumption.
     3、Frequency : high-frequency requirements, the structure should be optimized Direct-acting solenoid valves, power sharing should be optimized.
     4、Reliability
    Strictly speaking, this has not been formally included in the pilot solenoid valve our professional standards, To ensure the quality of the formal election should manufacturers of brand-name products. Some number of occasions not much action, but has very high reliability requirements, such as fire and emergency protection, we must not take it lightly. Particularly important, but should also take two used in conjunction with dual insurance.

四.Economy : Economy is not in the capital, energy and the waste of life

It selects one of the scale, but it must be in the security, application, on the basis of reliable economy.
Economy is not only the price of products, but also to prioritize its functions and the quality of installation and maintenance and other costs required for the annex.
More importantly, a solenoid valve control in the entire system in the entire control system, and even production lines share the cost minimal If greed and cheap small mistake early elections - caused damage is enormous.
     In short, the economy, not only in product prices, but the functional integrated product cost prices.

●Flows

Formula：Q=52.175Kv√△P/√G=44.7Cv√△P/√G
     Q：Flow:L/min
     △P=(Before pressure valve)P1（MPa）-(After pressure valve)P2（MPa）
     G：Severe fluid medium g/cm
     Kv：Flow coefficient (some manufacturers to Cv)
     1.0MPa=10kg/cm

● Notes orders

1.Orders must be stated Model, the supply voltage, medium names, parameters such as temperature, Conventional power supply voltage or DC24V AC220V
     2.Other special requirements can choose the following special varieties
     [Model ]-B explosion solenoid valve　　 　　 For the incendiary, anti-explosive levels  dⅡBT2、dⅡBT3、dⅡBT4
     [Model ]-X signal solenoid valve　　　　 Valve feedback from the state media and the flow of signals
     [Model ]-C stainless steel solenoid valve　　 For pH and other corrosive media
     [Model]-S With the manual solenoid valve　　　Opening or regulatory power outages、Maintenance can be manually controlled，Avoid bypass
     [Model]-N One-way solenoid valve　　　　 Stop the media back, eliminating check valve

● Installation notes

1、 Installation should carefully read the product's instruction manual to check whether or not the products fully comply with the requirement, the installation of familiar elements, make preparations.
     2、 Nameplate as subscript checking whether the parameters for the selected product parameters. With the use HSBC website.
     3、 Before taking over with the pressure of 0.3MPa full irrigation channels, pipelines metal powder residue sealing material, Rust remove dirt, etc..
     4、 Media attention to the clean, if the media with some mixed dust, impurities impede the normal solenoid valve, pipe by installing filtration valve.
     5、 Solenoid valve installed in the pipeline should not lower, packed in containers of pipelines, not the attention from the bottom of the container leads, and shall be packed in containers on the bottom were slightly location.
     6、 If the media will have a water hammer, then they should choose multifunctional solenoid valve or to adopt appropriate preventive measures.
     7、 Steam solenoid valve used to be equipped with a side entrance Traps, the Department should take over the tilt, Traps loaded at the low level.
     8、 Magnetic valve is generally directed, not anti-loaded, usually used in valve "arrow" said media flow direction, Installed in accordance with "the arrow" in the direction of the installation instructions.
     9、 General electromagnetic solenoid coil components should just stand up, perpendicular to the pipeline, some special products, Statement by the installation.
     10、 Takeover attention to the sealing material can not be used in excess. If threaded connections, and take over the thread should remain in the effective length, and end-use file pitch Department chamfering, Since the end with two teeth began winding sealing tape, or excessive tape or adhesive seal will enter solenoid valve, and to hinder the normal operation of the accident.
     11、 Electromagnetic valve installation Department should get some reserved space for its day-to-day maintenance and periodic maintenance.
     12、 Installed with a wrench or pipe clamp fixed the valve, and then take over on the bed, 10 million will be in force on the coil components caused deformation, so that the solenoid valve to normal work.
     13、 在管道刚性不足，或有水击现象的情况下，请把阀前后接管用支架扎实地固定好。
     14、 Freeze in place when used with pipe insulation materials on the protection, or the installation of the pipeline heater.
     15、 To confirm this, solenoid valve itself and its link with the receiver, whether it is leaking.
     16、 Winding the right to link verification, in particular three occasions lead wires.
     17、 Solenoid valve connected to the electrical components, such as relays, switches and contacts vehicles. Open valve should contact vibration shake, otherwise the work will not affect the reliability and life of the solenoid valve.
     18、 Electrical circuit to access relevant insurance lines, as the electrical circuit protection.
     19、 Maintenance and repair in order to facilitate the operations, or uninterrupted continuity of production, general solenoid valve, the proposed bypass isolation installation method.