Vacuum Control Valve

Used only on Federal applications, this valve is mounted in line between an intake manifold vacuum source and vacuum line of EGR system. When intake manifold vacuum exceeds 13.2-14.4 in. Hg, this valve will bleed off excess vacuum.

Fig 1: LUV Exhaust Gas Recirculation System

Courtesy of GENERAL MOTORS COMPANY

Fig 2: Sectional View of Vacuum Control Valve Showing Vacuum Flow Path During Operation

Courtesy of GENERAL MOTORS COMPANY