Sprague Systems Engineering - A Division of Maney Aircraft, Inc.

• Compact, lightweight unit for general use. • Occupies slightly more than one cubic foot of space and weighs six lbs. (2.7kg) less than HSU-1100. • Components include S-216-() pump, air filter, pressure regulator and lubricator, air shut-off valve, muffler, manifold, liquid bleed valve, air pressure gauge, liquid-filled liquid pressure gauge with quick disconnect fitting. • Stainless steel base has four mounting holes.

• PRIMARY FUNCTION:Trainer and light attack
• THRUST:3,000 pounds, per engine
• HEIGHT:14.80 feet (4.5 meters)

• Standard unit for general use. • Components include S-216-J-()-SS pump, air filter, pressure regulator and lubricator, air shut-off valve, muffler, liquid bleed valve, air pressure gauge, liquid-filled liquid pressure gauge with quick disconnect fitting. • Steel base has four mounting holes. • Available as HSU-1102 with the addition of a by-pass circuit that allows quick fills from your inlet source.

• Standard unit for general use. • Components include PowerStar 4 pump, air filter, pressure regulator, air shut-off valve, air pressure gauge, liquid-filled liquid pressure gauge with quick disconnect fitting. • Steel base has four mounting holes

• Air-operated piston pump mounted on tubular frame with wheels for extreme portability. • Hydro gauges, valves and pump regulator all panel-mounted. • Output pressure adjusted by setting air pressure regulator to pump. • Pump automatically shuts off at set pressure; re-starts when pressure drops.

A variety of hydraulic pumps is offered for various liquid output pressure up to 33, 500 psi (2311 bar). Sprague Products pumps service water, oil and most corrosive chemicals, and are rugged, service-proven and virtually maintenance-free. The Sprague Products positive-displacement type pump converts air inlet pressure to hydraulic output pressure. The pump uses low pressure air to act on a large area piston to produce high hydraulic pressure with a small area piston. In operation, the pump reciprocates rapidly until the system liquid pressure nears the desired level, then slows to a stop when the liquid pressure equals or balances the air pressure. This liquid-air pressure balance is maintained indefinitely in a holding condition with minimal energy consumption and with no increase in fluid temperature or parts movement. In contrast, a motor driven pump in a holding condition must continue to operate to maintain a pressure level. Excess liquid must be bypassed or recirculated back to the reservoir, resulting in energy loss, heat build-up, and the need for bypass components and a larger reservoir. The Sprague Products pump is efficient in operation and simple in design. Compared to other types of hydraulic pumps, it provides cost effective and energy saving benefits for many industrial and research applications.