浙江瑞安永久机电厂研制的多功能电磁阀,由于解决了近百年来世界上两个难题革除了隔离旁通的复杂管道、气液体可通用。在15届日内瓦国际发明与新技术展览会上荣获金奖。它集先导型电磁阀、手动截止阀、节流阀、止回阀等功能于一体,以其巧妙的设计、简单的结构和优越的功能,成为新一代的产品。其主要特点是:可隔离导阀;兼具全手动 Zhejiang Ryan permanent mechanical and electrical plant developed a multi-function solenoid valve, as solved nearly a hundred years in the world to solve the two problems of the complex bypass bypass pipe complex, gas and liquid can be universal. The 15th Geneva International Invention and New Technology Exhibition won the gold medal. It combines pilot solenoid valve, manual shut-off valve, throttle valve, check valve and other functions in one, with its clever design, simple structure and superior functionality to become a new generation of products. Its main features are: isolated pilot valve; both full manual