air control valve

Also found in: Acronyms.

air maintenance device

A valve required to introduce air into a tank which stores water under pressure.
References in periodicals archive ?
By January Kyle's Mfg Co was producing its first spool metal parts for air control valves.
BLD has plants in Holland, Michigan and Ocala, Florida, and manufactures a range of products including fuel pressure regulators, air by-pass valves, idle air control valves, and PCV valves.
Continental supplies air control valves for this engine.