供应RE-01-511431;
RE-01-511431。
电磁阀选型首先应该依次遵循安全性，可靠性，适用性，经济性四大原则，其次是根据六个方面的现场工况(即管道参数、流体参数、压力参数、电气参数、动作方式、特殊要求进行选择)。
选型依据：
1、根据管道参数选择电磁阀的：通径规格(即DN)、接口方式
1)按照现场管道内径尺寸或流量要求来确定通径(DN)尺寸;
2)接口方式，一般>DN50要选择法兰接口，≤DN50则可根据用户需要自由选择。
2、根据流体参数选择电磁阀的：材质、温度组
1)腐蚀性流体：宜选用耐腐蚀电磁阀和全不锈钢;食用超净流体：宜选用食品级不锈钢材质电磁阀;
2)高温流体：要选择采用耐高温的电工材料和密封材料制造的电磁阀，而且要选择活塞式结构类型的;
3)流体状态：大至有气态，液态或混合状态，特别是口径大于DN25时一定要区分开来;
4)流体粘度：通常在50cSt以下可任意选择，若超过此值，则要选用高粘度电磁阀。
3、根据压力参数选择电磁阀的：原理和结构品种
1)公称压力：这个参数与其它通用阀门的含义是一样的，是根据管道公称压力来定;
2)工作压力：如果工作压力低则必须选用直动或分步直动式原理;工作压差在0.04Mpa以上时直动式、分步直动式、先导式均可选用。
4、电气选择：电压规格应尽量优先选用AC220V、DC24较为方便。
5、根据持续工作时间长短来选择：常闭、常开、或可持续通电
1)当电磁阀需要长时间开启，并且持续的时间多于关闭的时间应选用常开型;
2)要是开启的时间短或开和关的时间不多时，则选常闭型;
3)但是有些用于安全保护的工况，如炉、窑火焰监测，则不能选常开的，应选可长期通电型。
6、根据环境要求选择辅助功能：防爆、止回、手动、防水雾、水淋、潜水。
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注：联系我时，请说是在“傲立机床网”上看到的，谢谢！
