ARO Pumps air-operated diaphragm pumps
Double-diaphragm pumps from ARO®. PRO, EXPERT and FDA series models available. Heavy duty designs, suitable for use most fluid transfer applications.
Compressed air-driven ARO diaphragm pumps provide a flexible solution for pumping liquids ranging from clean, low viscosity materials, corrosive or abrasive medium-viscosity media, as well as liquids with entrained coarse-grained solids. Gain from industry-leading efficiency, reliability, and tried-and-tested performance. Additionally, all double diaphragm ARO pumps are available with folded diaphragms, providing extended life and less maintenance.
ARO® pumps offers diaphragm pumps in a range of sizes and materials, with a choice of connection types. FDA approved versions are available for hygienic applications and Ex-certificated models are suitable for ATEX zoned areas protected against explosion (marked CE Ex II 2GD X).
We also supply speciality pumps for difficult applications, eg. high-pressure pumps and pumps with flap valves (for enhanced solids handling), plus an extensive range of accessories.
ARO double diaphragm pump features:
- Seal-free construction
- Low pulsation provides gentle liquid transfer
- Long-life PTFE diaphragms for double service life
- Ability to run dry for short periods
- Suitable for mobile use
- Self-priming
- Simple installation
- Can handle slurries with solid particles in suspension
- Electronic interface pumps for accurate dosing
- Positive displacement design ensures low fluid shear
ARO® pumps benefits:
- Productivity:
Firstly, ARO® pumps stands for optimum performance, characterized by high delivery rates with minimal pulsation and low air consumption. - Versatility:
A selection of different connection types is available, allowing pumps to be adapted for different applications. - Reliability:
ARO®pumps provide reliable operation thanks to the lubrication-free, patented differential valves, both the main air valve and the SimulShift (pilot valve). - Maximum safety:
Optimal chemical resistance and leakage protection thanks to a choice of body construction and elastomer materials. - Maintainability:
Lastly, ARO®pumps provide reduced repair times and costs, due to a simple modular structure, fewer components and easy-to-use repair kits.
Double diaphragm pumps from ARO® are available in metallic and non-metallic materials:
| Non-metallic materials | Polypropylene, conductive Polypropylene, Acetal, PVDF and conductive PVDF |
|---|---|
| Metallic materials | Aluminium, Cast iron, Stainless steel and Hastelloy |
The patented ARO® air motor technology:
- SimulShift ™ valve:
Prevents ARO® pumps from coming to a standstill - enables faster switching with larger flow rates. - Unbalanced” main air valve:
No pump downtime even with low inlet air pressures. - “D” valve for optimum energy efficiency while avoiding costly “compressed air losses”. Ceramic construction for a long service life.
- Quick Dump™ Exhaust Valves:
Prevent pump freezing by diverting cold and humid exhaust air from the main air valve.
Overview of double diaphragm pump markets:
Double diaphragm pump series from ARO®
FAQs
- How does an air operated diaphragm pump work?
Air-operated double diaphragm (AODD) pumps are a type of positive displacement pump that uses compressed air for operation. Here’s a brief overview of their operating mechanism:
Compressed air enters an air valve that directs the air to push a diaphragm, thereby discharging the liquid. This diaphragm is linked to a shaft that pulls the opposite diaphragm, creating a vacuum on the inlet side, to draw in the liquid.
The inlet and outlet chambers have one-way check valves, such as ball or flap valves. As one chamber is closed to push the liquid out, the other opens to draw the liquid in, alternating up to 400 cycles per minute.
- What is the life expectancy of a diaphragm pump?
Diaphragm pumps are renowned for their durability and efficiency in industries like construction, manufacturing and agriculture. Their popularity stems from their robustness and ability to perform reliability under tough conditions. Made from durable materials such as stainless steel, polypropylene or aluminium, these pumps are designed for heavy duty use and can last for many years if regularly serviced.
The lifespan of a diaphragm pump depends on several factors such as liquid characteristics, correct mounting, materials of construction and the duty cycle. Regular maintenance is vital to extend the life of diaphragm pumps. It is essential to inspect and replace parts like diaphragms and valve assemblies regularly to ensure optimal performance and reliability.
Additionally, proper usage within designated air pressures and adherence to manufacturer guidelines can prevent premature wear and tear. Avoiding dry running will improve diaphragm life. Leakage can only occur as a result of diaphragm failure.
Selecting the right size and type of pump for your needs enhances durability and efficiency. With proper care, diaphragm pumps can operate reliably for years, making them a valuable investment for demanding fluid management tasks. Consulting professionals and using genuine parts for repairs will help maintain your equipment in top condition.