Vacuum valves

Vacuum valves are the components that isolate, release, or regulate pressure between a vacuum pump and the vessel it evacuates, controlling flow and holding a seal under reduced pressure. In practice the category on Questpair is broader than the valves alone: it gathers the parts that sit around a laboratory vacuum line, from manifolds to exhaust filters to pump accessories. New, used, and refurbished units are listed, and 78 percent of the listings are used. Across 236 listings from 16 verified suppliers and distributors in 7 countries, the catalogue spans single fittings through complete pump assemblies.