BY CHOOSING A SPECIFIC FLUID VOLUME OR LENGTH ABOVE, SPECIFIC PERFORMANCE CHARACTERISTICS CAN BE VIEWED ON THE TECH SPECIFICATIONS TAB.

Parker bootstrap reservoirs — designed and manufactured by Parker Aerospace’s Hydraulic Systems Division — are found on many of today’s leading military and commercial aircraft, including the F-22 Raptor, F-16 Fighting Falcon, F/A-18 E/F Hornet, C-17 Globemaster, V-22 Osprey, and 787 Dreamliner. Our reservoirs range in size from 21.5 to 3,119 cubic inches and operate at system pressures between 3,000 to 5,000 psi.

Working side by side with our customers, we have provided everything from stand-alone reservoirs to highly customized and fully integrated reservoir/filter modules. Our reservoir/filter modules contain electrical sensors for measuring fluid level, temperature, and pressure, as well as filter replacement indicators. Most of our reservoirs also include an overboard relief valve and a bleed valve. New Parker proprietary auto-bleed valve technology is also available to improve system performance and reduce the time and cost of maintenance.

OPERATION
The hydraulic pump supplies system pressure to the reservoir connection and acts on the small piston. The force of this pressure is balanced by the induced pressure in the reservoir, which acts on the large main piston. For example, a bootstrap system can be designed so that a 3,000 psi system pressure at the small piston will produce 85 psi of reservoir pressure. Depressing the bleed valve stem permits the inner chamber pressures to reduce to ambient pressure, thus bleeding off any entrapped air. The overboard relief valve protects the reservoir assembly from over pressurization.

DESIGN HIGHLIGHTS
• High reliability
• Extensive service history
• Integrated bleed and relief valves
• Automatic bleed capability
• Visual and electrical level sensors
• Temperature compensated level sensor
• Isolation valves
• No external high-pressure leak paths
• Distribution manifold
• Compatible with phosphate ester-based and hydrocarbon-based (MIL-PRF-87257, 83282, 5606) operating fluids

OPTIONAL FEATURES
• Electrical fluid level sensor
• Mechanical fluid level sensor
• Temperature sensor
• Pressure sensor
• Relief valves
• Bleed valves (auto and manual)
• Filter system

Our substantial experience in developing hydraulic systems and our extensive line of hydraulic products enable us to custom design a solution for your application.