SC Hydraulic Engineering AB-2 & AB-4 Air Booster Systems

SC Hydraulic EngineeringAB-2 & AB-4 Air Booster Systems is a leading manufacturer and designer of an ever growing line of high pressure, air-driven liquid pumps, as well as air and gas boosters which are being used in a variety of industries and applications.

Growing since 1953, we offer liquid pressures as high as 65,000 psig and can exceed 17,000 psig in gas pressures.

General Product Information

  • Includes Air Drive Controls
  • Pressures Up To 555-psi (Ab-4)
  • Low Flow, Low Pressure Applications
  • Equipped With One Ab-2 Or Ab-4 Booster
  • Compact And Lightweight (Approx. 35-lbs)
  • High-pressure Receiver To Increase Flow Capacity

The S10320-AB-2 and S10320-AB-4 Systems provide the most compact sized unit for air booster requirements. Both units consist or either the 2:1 ratio or 4:1 ratio booster, filter/regulator combination with shut-off and air pressure gauge, 200 cubic inch reservoir tank with high pressure gauge.

The components are mounted on a sturdy free standing base and plate. The complete system measures 18 1/4″ high by 12 1/2″ wide by 6″ deep and weighs about 35 pounds.

This system is perfect for low flow cycling applications when a reserve of high pressure air (up to 600 psi) is required. The reservoir allows the booster to build up pressure between cycles for higher flow ability than the booster can deliver alone.


  • Top off high pressure tires
  • Increase plant air pressure
  • Release spring actuated brakes
  • Increase maximum torque on small air tools
  • Increase marginal air pressure to valve actuators
  • Extra force for small air clamps, roll tensioners, assembly machines and air presses


Model No. Maximum Rated Air Supply (Ps) Maximum Rated Air Outlet (Po) Connection Ports Static Outlet
Stall Pressure
Actual Area Ratio Displacement Per Stroke
(in3 per cycle)
Air Drive Air Inlet Air Outlet
AB-2 150 psig 300 psig 1/4″ NPT 1/4″ NPT 2 Pa 2:01 2.9
10.3 bar 21 bar
AB-4 150 psig 600 psig 1/4″ NPT 1/4″ NPT 4 Pa 4:01 1.4
10.3 bar 41 bar


M202 – Remote Pilot:This option provides a 1/8” NPT female port for remotely controlling the start/stop of the pump by connecting an external air signal to actuate the air cycling valve.

Performance Chart


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