Process valves

Process valves are mechanical components that direct, meter, or isolate the flow of liquids and gases within analytical and process systems. In laboratory instrumentation they switch between solvent streams, inject samples onto a column, and hold pressure in high-performance liquid chromatography and related techniques. On Questpair, new, used and refurbished process valves are listed across 335 items from 12 verified suppliers and distributors in 7 countries. Of those listings, 91 percent are used. Prices run from EUR 1 to EUR 43.044, which places bare replacement rotors at one end and complete high-pressure switching assemblies at the other. The range reflects how far this class of component spans, from a single seal to a full valve head.