Supply Valve

The Supply Valve controls the pressure function of the two pitot pressures. A higher engine pitot pressure will cause a higher supply valve pressure and a lower primary pitot pressure will cause a lower supply valve pressure. If both pitot pressures rise by the same amount the supply pressure will also increase. The supply pressure forms an input to the clutch PWM solenoid and is also used for belt lubrication and oil supply to the pitot systems.