原文：
　 一、安全性： 1、腐蚀性介质：宜选用塑料王电磁阀和全不锈钢；对于强腐蚀的介质必须选用隔离膜片式。中性介质，也宜选用铜合金为阀壳材料的电磁阀，否则，阀壳中常有锈屑脱落，尤其是动作不频繁的场合。氨用阀则不能采用铜材。 2、爆炸性环境：必须选用相应防爆等级产品，露天安装或粉尘多场合应选用防水，防尘品种。 3、电磁阀公称压力应超过管内{zg}工作压力。 　　二、适用性： 　　1.介质特性 　　1.1质气，液态或混合状态分别选用不同品种的电磁阀。 　　1.2介质温度不同规格产品，否则线圈会烧掉，密封件老化，严重影响寿命命。 　　1.3介质粘度，通常在50cSt以下。若超过此值，通径大于15mm用多功能电磁阀作特殊订货。通径小于15mm订高粘度电磁阀。 　　1.4介质清洁度不高时都应在电磁阀前配装反冲过滤阀，压力低时尚可选用直动膜片式电磁阀。 　　1.5介质若是定向流通，请作特殊要求提出。 　　1.6介质温度应选在电磁阀允许范围之内。 　　2.管道参数 　　2.1根据介质流向要求及管道连接方式选择阀门通口及型号。 　　2.2根据流量和阀门Kv值选定公称通径，也可选同管道内径。请注意有的厂家未标有Kv值，往往阀孔尺寸小于接口管径，切不可贪图价低而误事。 　　2.3工作压差 　　{zd1}工作压差在0.04Mpa以上是可选用间接先导式如顺控SK先导系列电磁阀；{zd1}工作压差接近或小于零的必须选用直动式或分步直接式如顺控SK直动系列电磁阀。 　　3.环境条件 　　3.1环境的{zg}和{zd1}温度应选在允许范围之内，如有超差需作特殊订货提出。 　　3.2环境中相对湿度高及有水滴雨淋等场合，应选防水电磁阀 　　3.3环境中经常有振动，颠簸和冲击等场合应选特殊品种，例如船用电磁阀。 　　3.4在有腐蚀性或爆炸性环境中的使用应优先根据安全性要求选用耐发蚀 　　3.5环境空间若受限制，请选用多功能电磁阀，因其省去了旁路及三只手动阀且便于在线维修。 　　4.电源条件 　　4. 1根据供电电源种类，分别选用交流和直流电磁阀。一般来说交流电源取用方便。 　　4.2电压规格用尽量优先选用AC220V.DC24V。 　　4.3电源电压波动通常交流选用+%10%.-15%，直流允许±%10左右，如若超差，须采取稳压措施或提出特殊订货要求。 　　4.4应根据电源容量选择额定电流和消耗功率。须注意交流起动时VA值较高，在容量不足时应优先选用间接导式电磁阀。 　　5.控制精度 　　5.1普通电磁阀只有开、关两个位置，在控制精度要求高和参数要求平稳时请选用多位电磁阀。 5.2动作时间：指电信号接通或切断至主阀动作完成时间。 5.3泄漏量 三、可靠性： 　　1、工作寿命，此项不列入出厂试验项目，属于型式试验项目。为确保质量应选正规厂家的xx产品。 2、工作制式：分长期工作制，反复短时工作制和短时工作制三种。常规产品均为长期工作制，即线圈允许长期通电工作。对于长时间阀门开通只有短时关闭的情况，则宜选用常开电磁阀。用在短时工作制而批量又 很大时，可作特殊订货以降低功耗。 3、工作频率：动作频率要求高时，结构应优选直动式电磁阀，电源优选交流。 4、动作可靠性 　　严格地来说此项试验尚未正式列入我国电磁阀专业标准，为确保质量应选正规厂家的xx产品。有些场合动作次数并不多，但对可靠性要求却很高，如消防、紧急保护等，切不可掉以轻心。特别重要的，还应采取两只连用双保险。 　　四、经济性： 　　它选用的尺度之一，但必须是在安全、适用、可靠的基础上的 经济。 　　经济性不单是产品的售价，更要优先考虑其功能和质量以及安装维修及其它附件所需用费用。 　　更重要的是，一只电磁阀在整个自控系统中在整个自控系统中乃至生产线中所占成本微乎其微，如果贪图小便宜而错选早造成损害群是巨大的。 　　安装注意事项如下： 　　1、安装时应注意阀体上箭头应与介质流向一致。不可装在有直接滴水或溅水的地方。电磁阀应垂直向上安装。 　　2、电磁阀应保证在电源电压为额定电压的15%-10%波动范围内正常工作。 　　3、电磁阀安装后，管道中不得有反向压差。并需通电数次，使之适温后方可正式投入使用。 　　4、电磁阀安装前应彻底清洗管道。通入的介质应无杂质。阀前装过滤器。 　　5、当电磁阀发生故障或清洗时，为保证系统继续运行，应安装旁路装置。

“ Solenoid valve used in the choice of features to note ”,是由提供的国际阀门新闻，译文仅供参考。另外，中国电磁阀网还提供相关产品搜索： 、 、 、 、 等。

译文：
First, security: 1, corrosive medium: better to use plastic and stainless steel solenoid valve king; for highly corrosive media must use isolation diaphragm. Neutral medium, it should use copper alloy shell material for the valve solenoid valve, otherwise the valve shell desquamation often rust, especially the action does not frequent occasions. Ammonia can not be used with the valve copper. 2, explosive environment: to choose the appropriate level of explosion-proof products, open-air installation or more occasions should use waterproof dust, dust variety. 3, electromagnetic valve nominal pressure should exceed the maximum working pressure tube. 2, Applicability: 1. Dielectric properties 1.1 The quality of gas, liquid or mixed states, which are used in different varieties of solenoid valves. 1.2 Medium temperature products of different specifications, otherwise the coil will burn, seals aging, seriously affect the mission lifetime. 1.3 medium viscosity, usually 50cSt the following. If more than this value, greater than 15mm diameter with a multi-function valve for special order. Diameter less than 15mm high viscosity valve set. 1.4 medium cleanliness is not high all should be equipped with electromagnetic valve before the recoil filter valve, low pressure can be used direct-acting fashion Diaphragm solenoid valve. 1.5 If the directional flow of media, please make a special request. 1.6 medium temperature should be chosen within the allowable range of electromagnetic valve. 2. Pipeline parameters 2.1 under medium flow pipe connection requirements and select the valve openings and models. 2.2 Kv value according to the selected flow and valve nominal diameter, with pipe diameter also optional. Please note that some manufacturers are not marked with the Kv value, often less than the interface, valve hole size diameter, must not seek the lowest and makes a botch. 2.3 Working pressure Minimum working pressure is more than can be used in 0.04Mpa indirectly, such as sequential control SK Pilot Pilot series solenoid valve; minimum working pressure close to or less than zero must be selected direct-action or step, such as Direct Sequence Control SK Direct Action Series solenoid valve. 3. Environmental conditions 3.1 environment, the maximum and minimum temperature should be selected within the allowable range, if tolerance be made for special order. 3.2 The environment of high relative humidity and a drop of water and rain and so on, should be selected water solenoid valve 3.3 environment, often vibration, bumps and shocks should choose special varieties of occasions, such as marine solenoid valve. 3.4 in a corrosive or explosive environments using security requirements should be given priority selection under the anti-hair loss 3.5 If the restricted environmental space, please use the multi-function valve, because of eliminating the manual bypass and three valves and easy online service. 4. Power conditions 4.1 According to the power supply types were selected to AC and DC solenoid valves. Generally speaking, convenient access to AC power. 4.2 voltage specifications used as preferred AC220V.DC24V. 4.3 AC power supply voltage fluctuations are usually used +% 10% .- 15%, DC to allow ±% 10 or so, should the ultra-poor, regulators should take measures or make a special order requests. 4.4 The selection should be based on the rated power capacity of current and power consumption. VA should be noted that when the exchange value of starting high priority should be used in the capacity of less than indirectly guided electromagnetic valve. 5. Control accuracy 5.1 General electromagnetic valve only opening and closing two locations, high precision in the control and parameters, please use a number of stationary electromagnetic valve. 5.2 Action Time: means to connect or disconnect signal to the main valve is completion time. 5.3 Leakage Third, reliability: 1, working life, this factory is not included in the pilot project, are type of pilot projects. To ensure the quality brand-name manufacturers should be regular elections. 2, the working system: sub-system of long-term work, repeated short-time work system and work system of three short. Conventional products are long-term work system, that is, the work coil to allow long-term power. For a long time only a short-term closure of the valve opening of the case, normally open solenoid valve should be chosen. Used in the short-time work system and the volume has Large, can be used for a special order to reduce power consumption. 3, the working frequency: frequency of demanding action, the structure should be optimized direct-acting solenoid valve, power optimization of the exchange. 4, operating reliability Strictly speaking, this test has not yet formally included in the professional standards of Electromagnetic valve, in order to ensure quality brand-name manufacturers should be regular elections. Not a lot of movement on some occasions, but has very high reliability requirements, such as fire, emergency protection, must not be taken lightly. Particularly important, should also take two Lianyong double insurance. Fourth, economy: Choose one of its scale, but must be safe, suitable and reliable based on the economy. Economy is not only the product price, but also to give priority to their functions and quality of installation and maintenance, and other accessories required for the costs. More importantly, a solenoid valve in the automatic control system in the whole production line automatic control system and even the share of the cost is minimal, if cheap and wrong to take any early damage group selection is huge. Installation as follows: 1, the installation should pay attention to the arrow on the body should be consistent with the medium flow. Can not be directly installed in a place dripping or splashing. Solenoid valve should be installed vertically. 2, solenoid valve should ensure the supply voltage for the rated voltage of 15% -10% range of normal fluctuation. 3, solenoid valve installed, the pipeline may not have negative pressure. And the need to power several times, so that optimum temperature before it can officially put into use. 4, solenoid valve should be thoroughly cleaned before installation pipeline. Access the media should be free of impurity. Valve-loading filter. 5, when the solenoid valve failure or cleaning, in order to ensure the system continues to run, should be installed bypass device.