Made of common carbon steel or stainless steel (with sanitary finishing, if necessary) in the sizes according to the table below, (or special ones, just specify) it is a simple mechanism, in the case of Gatec - driven by a worm screw coupled to a flywheel (with chain if necessary), and in the case of Gatec MT - driven by a geared motor (SEW quality) and a worm shaft. As an option, we recommend a panel and two limit switches to turn the gearbox off when fully open and vice versa.

How about closing this issue further?

For closing and eventual openings - Gatec.

When the closing and opening of valves is frequent - Gatec MT