Stop valve with bellow seals, maintenance-free, designed with external spindle and support guide, thus avoiding the atmospheric emissions of conventional valves. Works with: steam, hot and superheated water, thermal oil, process water, gases, glycol, compressed air, neutral fluids, etc. Applications in: process industry, shipbuilding, air conditioning systems, thermal oil installations and systems, vacuum installations ... etc. In accordance with the requirements of the pressure equipment directive 2014/68/EU.