Fuel Metering Valve Assembly (FMVA) incorporates an electro-hydraulic, 4-way fuel-metering servo, a pressure compensating by-pass valve, pilot operated solenoid and shut-off valve into a single integrated package. The FMVA uses a first-stage, electro-hydraulic servo. This servo is based on the 3-way, clevis-type fuel metering servo that is currently used in a variety of applications such as direct metered flow and pressure compensated flow control for turbine engine fuel systems and actuator position control.
| Specifications | Specifications |
|---|---|
| Response: Transient | 100% stroke in 0.4 seconds |
| Emergency Shutdown | 75% Reduction in flow in 75 ms |
| Hysteresis | Input <4.0 mA Output <4.0% of nominal rated flow |
| Threshold | 0.5 mA Max |
| Metered Flow | 0-1650 PPH @ steady state(0 – 100 mA Input signal)1750 +/- 25PPH Max Transient |
| Regulated By-Pass Flow | |
| Electrical | |
| Servo Rated Current | 0 to 100 mA |
| Coil Resistance | >70 +.- 5 Ohms at 70° F |
| Piloted Operated Servo | |
| Pull in Voltage | 14VDC Max (w/coil at room temp) |
| Drop-out Voltage | 0.5 – 2.0 VDC |
| Max Current | 1.0 Amp Max |
| Resistance | 5 +/- 1.5 ohm at 70° F |
| Environment | Conditions per ESR 1298 |
| Leakage | |
| Shut off Valve Port | 1 Drop in 1 Min Max |
| External | None |
| Return Pressure | 5 – 40 PSIG |
| Supply Pressure | |
| Normal Operating | 1300 PSIG |
| Max Abnormal Operating | 1500 PSIG |
| Proof | 1500 PSIG |
| Burst | 2250 PSIG |
| Temperature | |
| Ambient | 67 °F to +325 °F |
| Transients | Up to 392 ‘F for 5 mins |
| Fuel | 67 °F to +250 °F |
| Media | MIL-PRF-7024 Stoddard Solvent |
| Weight | 5.4 lb max dry weight |
| Part Number | 101326 |