Vacuum Valves

HVI is a leader in high reliability, precision stainless steel vacuum isolation and pressure control valves. The HVI family of vacuum isolation valves includes bellows and ball valves, manual, pneumatic and electro-pneumatic actuated valves in heated or unheated angle and inline configurations, safety shut off valves and soft start valves. Continual improvements in design improve life and reduce cost. Unique to the industry, all HVI valves seal both ways against full atmosphere pressure differential.