英国NORGREN电磁阀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：根据管道参数选择电磁阀的：通径规格（即DN）、接口方式按照现场管道内径尺寸或流量要求来确定通径（DN）尺寸。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。根据流体参数选择电磁阀的：材质、温度组腐蚀性流体：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。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。流体状态：大至有气态，液态或混合状态，特别是口径大于DN25订货时一定要区分开来。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。根据压力参数选择电磁阀的：原理和结构品种公称压力：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。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；***低工作压差在0.04Mpa以上时直动式、分步直动式、先导式均可选用。四、电气选择：电压规格应尽量优先选用AC220V、DC24较为方便。根据持续工作时间长短来选择：常闭、常开、或可持续通电当电磁阀需要长时间开启，并且持续的时间多余关闭的时间应选用常开型。要是开启的时间短或开和关的时间不多时，则选常闭型。1.1质气，液态或混合状态分别选用不同品种的电磁阀，例ZQDF用于空气，ZQDF—Y用于液体，ZQDF—2（或-3）用于蒸汽，否则易引起误。ZDF系列多功能电磁阀则可通通于气.液体。***好订时告明介质状态，安装用户就不必再调式。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ZDF系列多功能电磁阀作特殊订货。通径小于15mm订高粘度电磁阀。.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作例如CD—P。1.5介质若是定向流通，且不允许倒流ZDF—N和ZQDF—N单需用双向流通，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。NORGREN全系列产品***销售，型号如下：M/P19138S/666/7V61B513A-A213JNORGRENRM/930/J/40PRA/182050/M/400NORGRENSXE0573-A50-00/13JNORGRENSXE0574-A50-00/13JNORGRENRA/8125/L4/1200NORGRENM/9175/150NORGRENQM/9175/00NORGREN4380-300NORGREN3040302NORGRENQM/48/13J/21NORGRENQM/48/19J/21NORGRENV61B513A-A2000NORGRENV61B523A-A2000NORGRENV61B611A-A2000NORGRENQM/930H/00NORGRENV10626-A19LNORGRENV61B413A-A2000NORGRENV61B513A-A2000NORGREN602112148NORGREN602112168NORGREN8212200.8001.024NORGRENBL74-401GNORGRENS/1340/14NORGRENSXE9574-Z71-81KNORGRENR72G-2GK-RMNNORGRENV61B511A-A313JNORGRENM/50/LSU/2VNORGRENPRA/182050/250NORGRENSXE0575-150-00NORGRENSXE9573-170-00NORGREN8021950.0201.22000NORGREN100200500NORGREN102470405NORGREN5351-03NORGRENQM/34/5NORGRENM/58405/02NO583241NORGRENM/58404/02NO583249NORGRENM/58404/02NO583239NORGRENM/58404/02NO583239NORGREN3040302NORGREN3040302NORGREN3040302NORGREN3040302NORGRENV206517A-B213RNORGRENV206A11A-B213RNORGRENV61B411A-A3000NORGRENV61B413A-A2000-V10626-19NORGRENV61B513A-A2000-V10626-19NORGREN101250428NORGREN101470428NORGREN154202828NORGREN160234818NORGREN160234828NORGREN18-013-990NORGREN242251028NORGREN242471028NORGREN601112128NORGREN61B2/BS000NORGRENR07-200-RNKGNORGRENS/521NORGRENT1000C1800NORGREN2638010NORGRENM/738NORGREN11-204-006NORGREN18-013-011NORGRENB64G-4GK-AD3-RFNNORGRENB64G-6GK-AD3-RFNNORGRENB68G-NNK-AR3-RFNNORGRENR18-B00-RNXGNORGRENY68A-8GN-N1NNORGRENV61B313A-A200AC22050HZNORGRENV61B413A-A200AC22050HZNORGRENV22B517A-B213RNORGRENV22B517A-B313RNORGRENM/P19132NORGRENUM/22253/172/10NORGREN821097NORGREN***/9175/150NORGREN8240400.9101.024NORGRENL07-200-MPAGNORGRENR07-200-RNKGNORGRENSXE9561-A70-00BNORGRENM/46140/M/2500NORGRENSXE9573-Z71-80/19JNORGREN101250818NORGREN101250828NORGREN101470818NORGREN101470828NORGRENM/837NORGRENQM/1702/00NORGRENQM/21/11/00NORGREN74504-50NORGRENF64G-4GN-AD3G1/2NORGRENMB004BNORGRENY64A-4GA-N1NNORGRENQM/31/032/22NORGRENTQM/31/10NORGREN20AG-X6G/AH100NORGREN233320028NORGREN233410028NORGRENM/50035NORGREN3040302NORGRENMN01CGG75ALXXDC24VNORGREN102250505NORGRENCA/8050/M-250NORGREN2.40112E+15NORGREN2.40278E+15NORGREN8.02285E+15NORGRENF68G-NNN-AR3NORGRENM/1512)