The valves deliver a 0.07-Cv flow rate and have a pressure rating from 29 to 102 psig. The HEA Series also comes in a model that handles pressures up to 225 psig. Port sizes include M3, 10-32 UNF, and 1/8-in. NPT.

Humphrey Product Co., Box 2008, Kalamazoo, MI 49003, (269) 381-5500,