Safety valve for shutting off gas pipes in gas flow monitors is closed by slide mounted on guide pin, spiral spring fitted around this being connected to slide mounting and pin and pin and spring being enclosed in sleeve

摘要

The safety valve for automatically shutting off gas pipes is closed by a slide (9) mounted on a guide pin (16). A spiral spring (23) fitted around this is connected to the slide mounting and pin. Both pin and spring are enclosed in a sleeve (27).