Model 8402 is a high performance gas turbine fuel control valve with fast operating speed and large turn down ratio, designed for reliable and efficient control of any gas turbine. To meet the demands of virtually any industrial or aero-derivative gas turbine, the 8402 is equipped with an electric stepper-motor actuator, which can fully stroke the valve in only 250ms.

The valve itself has a 500:1 turn down ratio which, in many applications, allows a single 8402 valve to provide precise fuel delivery to the turbine from light off to maximum power. This combination of features enables the valve to enhance the performance of any gas turbine or turbo-machinery train. A key element in the performance of any fuel valve is the type and reliability of the position measurement device. Accuracy in position measurement is what allows the valve to keep the turbine operating in its maximum efficiency range while maintaining the safety of the machine and the entire turbo-machinery train.

The 8402’s absolute digital encoder for position measurement provides position repeatability of +/-0.05% of stroke. It also has digital electronics throughout to provide consistently accurate operation. Combining the efficiency and accuracy of the 8402 and the durability and protection of AMOT’s Model 4420 fuel shutoff valve it provides a reliable, cost effective control and shut-off system for any turbo-machinery application. The actuator enclosure is designed for use in hazardous environments and has been certified by CSA (Class 1, Division 1, groups C & D, explosionproof).