Allen Aircraft Products, Inc.

United States

Metal particles in the lubrication system of an aircraft engine or hydraulic system may be an indication of wear. Chip detectors are used to monitor these systems to provide early warning of impending failure so that maintenance can be performed on a timely basis.

Allen specializes in linear actuators to 3" bore and 15" stroke, usually made to the individual specification of the airframe manufacturer. Allen features two-way, one-way, and one-way spring-loaded actuators with operating pressure to 3000 PSI. Types of designs available include, but are not limited to, main gear uplock, main gear actuation, main gear door, main gear down lock, nose gear uplock, nose gear actuation, nose gear door, flap control, escape slide, speed brake actuation and speed brake uplock.

Allen's jet pumps for fuel transfer, scavenge, engine feed and mixing are simple in design, lightweight and self-throttling. With no moving parts, they provide the ultimate in reliability and maintainability. Jet pump configurations included are multiple pump configurations, pumps containing check valves, pumps with induced port screens, and pumps with nozzles that are easily removable for cleaning without tank drainage.

Allen produces a wide range of valves for use in aircraft fuel, hydraulic, air and water systems. Shutoff and Selector Ball Valves are designed to virtually eliminate pressure drop in the open position. Valves are available in multi-port configurations and can be controlled manually or via cable. Drain Valves can be adapted to a variety of services and are poppet or ball-type. Some valves incorporate positive locking features andor secondary seats to allow service without draining the system. Float Valves come in either flapper-type or ball-type for tank level control and venting applications. Pressure Relief Valves are designed with poppet or flapper elements to control system pressure parameters from low pressure to high pressure relief applications. Solenoid Operated Valves provide remote shutoff and draining functions in aircraft fuel, hydraulic and water systems. Valves can be normally open or normally closed in the de-energized mode.

Allen produces a full line of oil level indicators for monitoring fluid levels in aircraft engine and power system applications. Models are available which provide both a visual as well as remote indication via electronic signal.