Vacuum Regulator Valve (VRV)
- VRV regulates vacuum from vacuum pump in proportion to throttle angle. Vacuum from vacuum pump is supplied to port "A" and vacuum at port "B" is reduced as throttle is opened.
- Vacuum at port "B" should be 15 in. Hg at closed throttle, 6 in. Hg at half throttle and 0 in. Hg at wide open throttle.