Bellows sealed stop valves

Spirax Sarco BSA series bellows sealed stop valves use a dedicated bellows seal design to eliminate stem gland leakage completely and meet demanding leakage classifications. The BSA range includes throttling plug options, double bellows sealing for longer life and robust construction across sizes from DN15 to DN250 with flanged, threaded and socket weld connections. They are suited to steam and condensate, process fluids, hot and cold water, hot oil, thermal fluids, toxic fluids, compressed air, other gases and industrial water / glycol services.