Rheodyne, L.P.

Rheodyne is the world's leading manufacturer of precision high-pressure fluid valves and associated products for analytical chemistry. Since 1976, our passion for excellence has advanced our reputation as the foremost global experts in sample injection, fluid switching, and fluid selection platforms. Moreover, manufacturers routinely look to Rheodyne's development expertise for the design of complete fluid handling assemblies for liquid chromatography (HPLC) and other types of instrumentation. "Innovation, Quality, and Performance" are the distinguishing characteristics of all Rheodyne products.

Rheodyne serves the needs of laboratory customers through a worldwide network of authorized distributors.

Rheodyne's modern headquarters and manufacturing facilities are located in Rohnert Park, CA, just 45 miles north of San Francisco.