電磁閥

電磁閥是閥門的一種，使用電磁線圈驅動。

電磁閥的工作原理

電磁閥用於流體動力氣動和液壓系統，控制氣缸，液壓傳動電機或較大的工業閥門。自動灌溉噴頭系統還利用電磁閥與自動控制器。國內洗衣機和洗碗機用電磁閥來控制水進入機器。

電磁閥可用於工業應用的廣泛陣列，包括一般的通斷控制，校準和測試台，試驗工廠控制迴路，過程控制系統，和各種原始設備製造商的應用程序。

https://web.archive.org/web/20140407073548/http://www.mgacontrols.com/category/solenoid-valves/ illustrations of 2-way, 3-way, and pilot operated solenoid valves
https://web.archive.org/web/20140310224909/http://www.hnsa.org/doc/fleetsub/refrig/chap7.htm pp. 39–40. Solenoid valve illustration; breakaway pin / kick-off.
http://www.smc.eu/portal/WebContent/local/UK/Pneu_Book/Solenoid_Valves.jsp （頁面存檔備份，存於網際網路檔案館） Skinner valve, 1930s; magnetic path issues; wear; power; number of cycles
http://www.surmaq.com/html/cata/parker/contr/skinner.pdf^{[永久失效連結]} pp. 128-131; tech details of design; different terminology; welded sleeve; valve sizing. Page 128: "Skinner Valve plunger assemblies, when appropriate, use floating top and bottom seals to enhance valve performance. Floating seals permit the plunger to generate a larger actuation force to open against the pressure differential in the valve. This enables the valve to operate at higher pressure ratings." Material has implications for shading ring: copper is satisfactory for many materials, but it is unsatisfactory for coffee and urea; silver is satisfactory for those fluids. (pp 130–131.)