Pressure, Vacuum and Temperature Specifications

EGR VALVE
Vacuum To Open 1.6 - 2.4 in Hg (40 - 60 mmHg)
Coolant Temp. Minimum 131°F (55°C)

ROLLOVER/VENT VALVE
Tank pressure to OPEN (max.) 1.0 psi (7.0 kPa)
Air pressure to vent tank (max.) 0.7 psi (4.9 kPa)

TWO-WAY CHECK VALVE
Vacuum To Open Port A (Fuel Tank Pressure) 1.01 in Hg (26 mmHg)
Vacuum To Open Port B (Barometric Pressure) 1.73 in Hg (44 mmHg)