Aerospace
JASC produces a range of fluid management devices, servo valves, and actuators that are flying on today's most popular aircraft around the world. From tiny flow dividers on E-Jets to an integrated fuel metering system used on the world's largest APU supplying power to the A38O, JASC hardware operates in extreme conditions of temperature and pressure.
FLUID MANAGEMENT
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.
Pressure Regulators produce multi-function fluid pressure regulators are modularized and are qualified for aircraft applications. The modular configuration is used to improve system maintainability.
This precision bypass pressure regulator is based on JASC’s patented inverted spool technology and was designed to control the pressure ratio across an APU fuel pump.
These Flow Dividers exhibit low internal leakage while combining stable operation with low hysteresis and accurate flow metering.
Smart metering pumps were developed as a fuel control/pump combination for small, expendable turbojet engines. The smart metering pump is motor driven and receives its electrical signals from the integrally mounted electronic motor speed controller.
JASC’s Proportional Solenoid Valve operates a single arm variable bridge pneumatic flapper valve that controls the actuator position by balancing magnetic and feedback spring forces.
JASC’s Cavitating Pintle Valve is a high-speed motor driven pintle valve with electronic control for metering of high-pressure gaseous hydrogen or silane. These valves form the heart of NASA’s Hyper-X Hypersonic Experimental Research Vehicle Fuel System.
Using technology developed for use on NASA’s successful X-43A Hypersonic Research Vehicle (Hyper-X) was adapted and commercialized through this technology into a high-precision metering valve for industrial fuel control applications.
Active Combustion Control Valves are derived from patented JASC Servo Valve Technology that employ a robust and extremely reliable means for metering and modulating fuel flow over a broad range of conditions – all in a relatively compact and light-weight package.
The shuttle valve is a three port fueldraulic valve that allows flow from the inlet to the primary manifold. When inlet pressure is removed, the valve allows compresser air to purge fuel out of the primary manifold through the drain port during engine shutdown.
SERVO VALVES
JASC’S Single-Stage Clevis Servo Valve is manufactured in a number of configurations. The JASC Clevis Servo Valve is capable of 2-way or 3-way operation and offers mechanical or electrical feedback. It offers other benefits such as low hysteresis and threshold.
The Three-Way High Flow single stage pressure compensated servo valve delivers a precise cylinder pressure as a function of torque motor current. The Three-way Pressure Controlled Servo Valve is designed to operate on turbine oil, hydraulic fluid, diesel oil, jet fuel or stoddard solvent.
The FlexJet® servo is based on JASC’s extensive work with servos in harsh service conditions. The FlexJet® servo features high contamination resistance and is a more robust design compared to traditional jetpipe servos.
This electrically operated pneumatic 3-way servo valve contains multiple features that create robustness for high vibration environments. Passive cooling allows the servo valve to live in extremely hot temperatures using conventional materials.
This electrically operated fueldraulic servo valve uses a pressure balanced nozzle flapper to provide proportional flow control.
JASC produces a variety of pneumatic flapper servo valves designed for harsh environments. These come in 2-way and 3-way configurations with single and dual coil control.
This servo valve produces full 4-way control at 3000 psig using only a single stage. It is designed for high vibration environments and long service life.
JASC’s patented mass-balanced FlexJet first stage drives the second stage to produce up to 16 GPM of proportional flow control under harsh, high-vibration environments.
ACTUATORS
The Inlet Guide Vane Actuator (IGVA) has a direct-acting, 3-way clevis-type, servo valve used for actuation with an LVDT to provide position feedback.
This actuator was designed to replace pneumatic actuators found on gas turbine auxiliary power units (APUs) to operate load and surge valves handling air at temperatures in excess of 600˚F.
Utilizing a single-coil design with 0-10 VDC input, this pneumatic FlexJet® servo-actuator provides powerful position control up to 2” that is directly proportional to input voltage. An internal spring provides position feedback to the servo, resulting in exceptional control capabilities in a small package.
The 1-inch bore unit is available in .5-, 1.0-, 1.5- and 2-inch stroke lengths. Male and female threads (1/4-28 UNF) on each end are ready to accept a rod end or other bearing device.
1.5- and 2-inch bore actuators are also available.