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Choosing the Right Diaphragm Pump Oct 21 , 2023

Diaphragm pumps are positive displacement pumps commonly used in wet commercial pumping applications. Air diaphragm pumps run on compressed air and move slurries, solvents, and other high-viscosity liquids.


Selecting the right Air Diaphragm Pump for your operation involves the consideration of several key points:


· Fluid Compatibility: ensure the pump materials are compatible with the fluid you intend to handle as some fluids will corrode certain pump components


· Flow Rate and Pressure: determine your required flow rate (LPM: Litres Per Minute or GPM: Gallons Per Minute) and the maximum pressure (Bar or PSI) the pump needs to deliver and match that with the pump’ specifications


· Suction and Discharge Ports: ensure the size and type of suction and discharge ports are aligned with piping and system requirements


· Viscosity: consider the viscosity of the fluid being pumped. Diaphragm Pumps can handle a wide range of viscosities


· Temperature Range: ensure the pump can handle the temperature range of the fluid being pumped


· Solids Handling: if your fluid contains solids, select a Diaphragm Pump designed for solids handling, or install appropriate filters/strainers


· Chemical Resistance: if dealing with chemicals, opt for chemically resistant diaphragm materials


· Power Source: determine the power source available (electric, pneumatic, hydraulic) and select a pump that matches it


· Noise and Vibration: assess the environment for noise and vibration restrictions as some Diaphragm Pumps are quieter than others


· Maintenance and Serviceability: consider ease of maintenance and availability of spare parts for long-term cost-effectiveness


· Safety Features: look for safety features like overload protection and leak detection, especially when handling hazardous materials


If in doubt, contact with DEFU for personalised guidance based on your specific application

Consulting with pneumatic diaphragm pump manufacturers, like DEFU, is essential when selecting a Diaphragm Pump. We can recommend the right pump model, size and configuration, as well as asses compatibility with fluids and environmental factors. 

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