CLA-VAL 354GF : In-Line Pressure Control Valve
The Cla-Val Model 354GF Valve is used to control fuel pressure delivered into an aircraft through an underwing refuelling nozzle. The 354GF is intended for use on various forms of aircraft refuelling vehicles. Model 354GF In-Line Pressure Control Valve is a direc acting piston valve controlled by an external deadman device. When the deadman signal is "On" (applied), the valve opens to delivery fuel downstream. Opening times vary by application and are preset to be between 5 and 10 seconds. When the deadman signal is release/removed, the valve closes. Closing time is adjustable, but in set at factoy for between 2 and 5 seconds. Closing speed can also be adjusted to control overshoot (the volume of fuel that passes through the valve after the deadman signal is removed and when the valve fully closes).
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