AZ-2 Series Hydraulic Pumps

An Air operated liquid pump for pressure testing, chemical injection and hydraulic power. Compact in size, minimal weight and ability to operate in many environments.

Hydratron AZ-2 Air Driven Liquid Pump

is a reciprocating, positive displacement pump with a directly coupled, integral linear reciprocating air motor designed to generate High-Pressure Liquid flow.

The pressure increase is made possible by means of the area ratio between the larger diameter air drive piston directly connected to a smaller diameter liquid plunger/piston. Using our various material & seal options they are suitable for pumping a wide range of liquids including water, oil, water/glycol and many other chemical fluids.

All Models can easily be incorporated into easy to operate Standard System hydraulic power units.


Hydratron AZ-2 Air Driven Liquid Pumps offer many desirable features:

  • Ability to stall at a predetermined pressure and hold this fixed pressure without consuming power or generating heat.
  • No risk of flame or spark.
  • Infinitely variable speed/output flowrate control.
  • Infinitely variable output pressure control.
  • Easy to apply automatic controls.
  • Standard models are suitable for oil or water applications.
  • Isolation chamber for Chemical applications.
  • No limit or adverse effects in continuous stop/start applications.
  • Proven reliability, easy to maintain and robust.


AZ-2 Pump In Frame

Hydratron designs and manufactures a comprehensive range of “Plug & Play” Standard Systems, incorporating its core product Liquid Pump and Gas Booster models.

View AZ-2 HPU

Feature Icon - High Pressure

Suitable for 2,150 to 45,800 PSI

Feature Icon - Easy Maintenance

Easily maintained

Icon - Controls

Simple to set automatic controls

Feature Icon - Chemical Applications

Configurable for oil, water or chemicals

Feature Icon - Frames

Made of quality materials

Multiple Pressures Available

Models for all pressures


Air Motor:

Mainly anodized Aluminium with a filament-wound composite air cylinder, carbon steel zinc plated tie bolts and nitrile seals.

Hydraulic Section:

  • Oil service units have cold rolled plated steel piston, cylinder and check valves.
  • Water service units have 303 stainless cylinders, stainless piston and check valves.
  • Internal check valve parts are 300 series stainless steel except for ball which is 440C stainless steel.
  • Nitrile seals are standard (other compounds are available as required). All hydraulic pistons are hard chrome plated.
  • Other material options are available, please contact us for more information.


Model Max Output Pressure @ 100 psi (7bar) Air Drive Max Outlet Flow Displacement/Cycle Data Sheet
Psi Bar Cu Ins/min L/min Cu Ins cc’s
AZ-2-21 2,150 148 976 16.01 4.06 66.6 Download
AZ-2-27 2,700 186 817 13.40 3.38 55.4 Download
AZ-2-36 3,600 248 622 10.20 2.49 40.8 Download
AZ-2-60 6,000 414 378 6.20 1.50 24.6 Download
AZ-2-97 9,700 669 238 3.90 0.93 15.2 Download
AZ-2-144 14,400 993 165 2.71 0.62 10.2 Download
AZ-2-180 18,000 1,241 128 2.10 0.49 8.0 Download
AZ-2-237 23,700 1,634 96 1.57 0.38 6.2 Download
AZ-2-323 32,300 2,228 70 1.15 0.28 4.5 Download
AZ-2-458 45,800 3,159 46 0.75 0.19 3.1 Download