Diaphragm Pump

A diaphragm pump is a positive displacement pump that uses a flexible membrane (diaphragm) to move fluids, slurries, or gases. Driven by hydraulic pressure, compressed air, or mechanical actuation, diaphragm pumps are widely used in construction, agricultural, and industrial equipment where reliable fluid transfer is required — even in demanding or abrasive conditions.

At Fab Heavy Parts, we stock new replacement diaphragm pumps compatible with a wide range of heavy equipment and industrial applications. Each unit is sourced to OEM-equivalent specifications for reliable fit and long service life.

Common Applications

• Fuel and fluid transfer in construction and agricultural machinery
• Chemical dosing and water treatment systems
• Dewatering and slurry handling on job sites
• Hydraulic and pneumatic systems requiring pulsation-free flow

Common Symptoms of a Failing Diaphragm Pump

• Loss of prime or reduced flow rate
• Fluid leaking from the pump body or diaphragm housing
• Irregular pulsation or erratic pressure output
• Unusual noise during operation

Not sure which diaphragm pump fits your equipment? Contact our team with your machine make, model, and application — we'll help you find the right replacement.