Sprague Air Driven Pumps (ID=306)

Sprague Products developed the world's first air operated liquid pump in 1947 to solve a hydrostatic testing problem within the aerospace industry. The classic positive-displacement design of that first Sprague pump became the foundation for widespread adoption of high pressure hydraulic pumps to accomplish a wide range of testing, actuating and lifting operations. The proven designs and reliable operation of Sprague liquid pumps, gas boosters and power units allowed Sprague to become the market leader for air-driven products serving aerospace, oil and gas, chemical/petrochemical, general manufacturing, heavy construction and many other industries.

The Sprague positive-displacement pump converts air-drive pressure into hydraulic discharge pressure.  The pump uses low pressure air or gas to drive a large area piston, which then drives a small area liquid piston that produces high hydraulic pressure.  As the ratio between the air drive piston and the liquid piston increases, higher pressures can be achieved.

In operation, the Sprague pump reciprocates rapidly until the system's liquid pressure nears the desired level, as determined by the air regulator setting, and then slows to a stop when the liquid discharge and air-drive forces reach equilibrium.  This liquid-air balance is maintained indefinitely in a holding condition with minimal energy consumption and with no increase in fluid temperature or parts movement.  The pump will automatically restart if the liquid discharge pressure degrades or the inlet air-drive pressure is increased. Pump Configurator

The Sprague pump is an efficient, time tested design that provides users with cost-effective and energy-saving benefits.

For technical support on Sprague products, please contact: pumpsales@highpressure.com

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