FlexJet® Servo Interactive

JASC has over 20 years of experience manufacturing servos for use in adverse conditions resulting in rugged, low-cost designs that meet aerospace demands.

JASC has designed many servo configurations. Our first servo design was the 3-Way Clevis Servo Valve, which resulted in a series of other design configurations such as the flapper nozzle and the jet-pipe-style FlexJet servo valve.

Our latest design, the FlexJet Servo, is used today in a variety of capacities such as animatronics applications, aircraft environmental control systems, for underwater marine environments and rocket engine thrust control. The FlexJet servo is available in fueldraulic, pneumatic and hydraulic versions.

Below is our FlexJet Servo schematic, in simplified form. To learn more about our FlexJet product, hover over the blue headlines in the schematic below.

High Contamination Resistance

Large flow passages combined with a contoured nozzle/receiver set resist contamination buildup inside the unit. Optional inlet filters provide additional contamination protection.


High Dynamic Response

The compact size and resulting low mass of the moving components provides rapid transition to full flow at relatively low power levels.


Large Orifice Nozzle and Receivers

The FlexJet offers a highly efficient, low internal pressure drop approach by maximizing available diameters, and has the added benefit of minimizing contamination potential.


Design Minimizes Effects of Extreme Temperatures, High Vibration and Shock

Robust coil retention, mass balancing of moving assemblies, and design symmetry all contribute to minimize environmental effects.


Mechanical or Electrical Feedback Systems Available

Options include a spool engagement spring, piston positioning spring, linear potentiometer, LVDT or other electrical feedback (per customer request).


Robust Coil Retention

The dry coil is rigidly secured to the body to eliminate movement under attitude changes or vibration, providing consistent operation over a broad range of environmental conditions.

Null Bias Shift Minimization

The symmetric design of internal hardware virtually eliminates null bias shift from pressure or temperature changes.