Control valve for snow gun has slide which is moved by spindle and nut system, 3-way electromagnetic valve acting as auxiliary operating system if spindle and nut system becomes inoperative

摘要

The control valve for a snow gun has a slide (3) which is moved by a spindle (4) and nut (5) system. A 3-way electromagnetic valve (1) acts as an auxiliary operating system if the spindle and nut system becomes inoperative.