When the aircraft is connected to a ground refueling source, the fuel management system commands the refuel shutoff valve to close when the selected fuel quantity is reached in conjunction with the refuel control solenoid or pilot-operated float valve.
Refuel shutoff valves such as the one above are mounted to a vertical rib and are designed with several features that are required in today's -
demanding aerospace needs (i.e. FAR25.g81, windmilling & engine blade out). This style of valve is also designed to keep surge pressure low -
when the valve is commanded to shutoff, thus protecting any downstream equipment. With ts low pressure drop and low leakage rate, this -
valve is an ideal choice when properly selected for the right application. -
The refuel shutoff valve is designed to operate in conjunction with a refuel control solenoid or pilot-operated float valve. When the aircraft is -
connected to a ground refueling source, refuel pressure and flow are routed to the inlet of the valve, allowing the fuel tanks to be filled. When -
the selected aircraft fuel quantity is reached, the fuel management system will command the refuel-control solenoid or pilot-operated float -
valve to close, thus commanding the refuel shutoff valve to the closed position. -
The material and finishes used in the construction of the valve and those of similar, previously qualified valves are unaffected by several -
environmental conditions listed in RTCA DO-160 and MIL-STD-810. This elegantly simple design is extremely reliable and several variations of