Pneumatic Piston Pumps

Pneumatic piston pumps are industrial transfer pumps powered by compressed air, with a cylinder, connecting rod, inlet ball, and sealing seat working together to move fluid through the pump. When air enters the pump, it pushes the piston upward, closing the top inlet and opening the bottom outlet. At the end of each stroke, the reversing mechanism changes the air direction and sends the piston back the other way. The piston continues moving up and down, drawing liquid into the pump and then pushing it out in a steady flow without electricity at the pump.

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Applications

Pneumatic piston pumps are used in processes that handle viscous, high-temperature, or mildly abrasive liquids. With pump bodies available in 304, 316, or 316L stainless steel, they are suitable for industries that need stable transfer of demanding fluids, including:

Chemical Processing: Corrosive liquids, solvents, acids, alkalis, and other chemical process fluids

Paint and Coating Production: Paints, coatings, and fluids used in spraying or coating systems

Oil and Gas: Lubricating oil, fuel oil, and other high-viscosity liquids

Industrial Cleaning: High-pressure water, cleaning agents, solvents, and other liquids used in cleaning equipment

Our Pneumatic Piston Pumps in Action:

Stainless Steel Air Piston Pump, 1.25:1

Max. Working Pressure: 174 psi / 1.2 MPa / 12 bar
Max. Flow Rate: 6 gpm (22.8 L/min)
Max. Suction Lift: 5 m
Max. Solid Particle Size: 2.5 mm
Fluid Inlet Size: 1-1/2"
Fluid Outlet Size: 3/4"
Max. Air Consumption: 34 scfm (17 L/s)
Air Inlet Size: 1/4"
Connection Type: Female thread
Pressure Ratio: 1.25:1
Feature: Compact structure

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Stainless Steel Air-Powered Piston Pump, 2:1

Max. Working Pressure: 435 psi / 3.0 MPa / 30 bar
Max. Flow Rate: 14 gpm (53 L/min)
Max. Suction Lift: 7 m
Max. Solid Particle Size: 3 mm
Fluid Inlet Size: 1-1/2"
Fluid Outlet Size: 1"
Max. Air Consumption: 60 scfm (28 L/s)
Air Inlet Size: 1/2"
Connection Type: Female thread
Pressure Ratio: 2:1
Feature: Different pressure ratios can be configured with the same cylinder size to meet different output pressure requirements

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Air Operated Stainless Steel Piston Pump, 3:1

Max. Working Pressure: 435 psi / 3.0 MPa / 30 bar
Max. Flow Rate: 14 gpm (53 L/min)
Max. Suction Lift: 7 m
Max. Solid Particle Size: 3 mm
Fluid Inlet Size: 1-1/2"
Fluid Outlet Size: 1"
Max. Air Consumption: 60 scfm (28 L/s)
Air Inlet Size: 1/2"
Connection Type: Female thread
Pressure Ratio: 3:1
Feature: Different pressure ratios can be configured with the same cylinder size to meet different output pressure requirements

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Stainless Steel Pneumatic Piston Pump, 4:1

Max. Working Pressure: 580 psi / 4.0 MPa / 40 bar
Max. Flow Rate: 18 gpm (68 L/min)
Max. Suction Lift: 6 m
Max. Solid Particle Size: 3 mm
Fluid Inlet Size: 1-1/2"
Fluid Outlet Size: 1-1/2"
Max. Air Consumption: 40 scfm (20 L/s)
Air Inlet Size: 1/2"
Connection Type: Female thread
Pressure Ratio: 4:1
Feature: Different pressure ratios can be configured with the same cylinder size to meet different output pressure requirements

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Pneumatic Stainless Steel Piston Pump, 5:1

Max. Working Pressure: 725 psi / 5.0 MPa / 50 bar
Max. Flow Rate: 15 L/min
Max. Suction Lift: 8 m
Max. Solid Particle Size: 3 mm
Fluid Inlet Size: 1-1/2"
Fluid Outlet Size: 1-1/2"
Max. Air Consumption: 35 scfm (16.5 L/s)
Air Inlet Size: 1/2"
Connection Type: Female thread
Pressure Ratio: 5:1
Feature: Different pressure ratios can be configured with the same cylinder size to meet different output pressure requirements

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Stainless Steel Air Operated Piston Pump, 12:1

Max. Working Pressure: 1800 psi / 12.5 MPa / 125 bar
Max. Flow Rate: 19 L/min
Max. Suction Lift: 10 m
Max. Solid Particle Size: 2.5 mm
Fluid Inlet Size: 1"
Fluid Outlet Size: 1-1/2"
Max. Air Consumption: 80 scfm / 2.2 m³/min
Air Inlet Size: 1/2"
Connection Type: Flanged connection
Pressure Ratio: 12:1
Feature: Compact pump barrel with high pressure ratio; barrel length can be customized

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