Ingersoll Rand ARO Pump | Reliable Air-Operated Diaphragm Pumps

Versatile fluid handling – Why choose ARO?

Firstly, our compressed air-driven Ingersoll Rand ARO pump range provides a flexible solution for pumping liquids of varying viscosity, from <1 up to 20,000 mPas. Furthermore, they can even handle abrasive media and fluids with entrained solids. Additionally, all EXP Series ARO double diaphragm pumps are available with convoluted diaphragms, delivering up to four times longer life plus lower maintenance. Gain from industry-leading running costs, reliability, and proven ARO performance.

ARO diaphragm pumps come in multiple sizes and materials, with various connection options to choose from. FDA-approved models are available for hygienic applications, while ATEX-certified versions meet explosion protection standards (CE Ex II 2GD X).

ARO also supplies speciality pumps for challenging applications, such as high-pressure pumps and flap valve pumps (for enhanced solids handling), along with a wide range of accessories.

ARO double diaphragm pump features:

Seal-free construction.
Low pulsation provides gentle liquid transfer.
Ability to run dry for short periods.
Suitable for mobile use.
Self-priming.
Simple installation.
Can handle slurries with solid particles in suspension.

Positive displacement design ensures low fluid shear.
Hybrid male-female inlet and outlet connections provides flexibility for smaller models.
Optimal chemical resistance thanks to a choice of body and elastomer materials.
Compact ¼” to ¾” models feature unbalanced “D” valve design for optimum energy efficiency, while avoiding costly compressed air losses. It’s ceramic construction provides a long service life and positive sealing.

Key benefits of Ingersoll Rand ARO pump EXP range

Over and above the PRO Series, the EXP Expert series are automation ready. They also deliver improved long term performance and reliability:

Improved productivity: EXP pumps can be fitted with an electronic interface and solenoid actuated air valve for accurate dosing and batch dispense control. Furthermore, you can automate your processes by combining EXP pumps with the ARO Controller, or linking to a PC or PLC based control system.
Long-life convoluted PTFE diaphragms: provide up to 4 times extra service life.
Internal stroke sensor and stroke-limit signals: For tracking volumetric output and operational data. Helps operators ascertain when preventative maintenance is required.
Lubrication-free, patented differential valves for main air valve and pilot valve, provide consistent performance:
- The patented SimulShift™ pilot valve ensures smooth operation while minimising the risk of stalling.
- The unbalanced main air valve eliminates the risk of stalling on start-up. Therefore no pump downtime, even with low inlet air pressures.
Quick Dump™ Exhaust Valves: prevent pump icing by diverting cold exhaust air away from the main air valve, thereby improving reliability when running at high cycle rates.
Easy maintenance: ARO EXP pumps deliver reduced repair times and costs, thanks to their modular structure, with fewer components and easy-to-use repair kits.
5-year warranty: Finally, ARO are so confident in their EXP Series pumps, they provide a 5-year warranty against manufacturing defects.
Leak-detection: Optionally available to warn operatives of diaphragm failure.

Please call us on 01202 823304 or email sales@flux-pumps.co.uk for assistance

Industry applications

The Ingersoll Rand ARO pump range is trusted across every industry, including:

Agriculture
Chemical Processing
Cosmetics
Food & Beverage
General Industry

Paints & Coatings
Petrochemicals
Pharmaceuticals
Surface Technology
Water Treatment

Make an enquiry

Ingersoll Rand ARO pump range- FAQs

Air-operated double diaphragm (AODD) pumps are compressed air powered, positive displacement pumps. Here’s a brief overview of their operating mechanism:

Firstly, a shared shaft connects two flexible diaphragms that move forwards and backwards, pumping liquid in and out of two connected fluid chambers. The chambers share a common inlet and outlet. A bi-directional compressed air valve directs air to push one or other diaphragm, thereby pressurising one liquid chamber, while simultaneously creating a vacuum in the other.

Each pump chamber has an inlet and outlet check valve, typically ball or flap valves. As one chamber is pressurised to push the liquid out, the inlet check valve closes, while the discharge check valve opens and the liquid is discharged into the outlet manifold. Meanwhile the check valve in the opposite chamber opens under vacuum and the discharge valve is closed as fluid is drawn in from the inlet manifold.

The pumping cycle alternates up to 400 times per minute.

Diaphragm pumps are renowned for their durability and efficiency in tough industries such as construction, manufacturing and agriculture. Their popularity stems from their robustness and ability to perform reliably 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. However, regular maintenance is also vital to extend the life of your diaphragm pump. Therefore, it is essential to inspect and replace parts such as diaphragms and valve assemblies regularly, to ensure optimal performance and reliability.

Use within designated air pressures and adhere to manufacturer guidelines to prevent premature wear and tear. Additionally, avoiding dry running will improve diaphragm life. Leakage can only occur as a result of diaphragm failure.

Furthermore, selecting the right size and type of pump for your needs enhances durability and efficiency. For instance, running a small pump at very high speed will reduce diaphragm life compared to running a larger pump more slowly, while delivering the same flow rate. It can help to consult industry professionals, such as Flux, so we can assist in pump selection.

With proper care, diaphragm pumps can consequently operate reliably for years, making them a valuable investment for demanding fluid management tasks. Plus, using genuine spare parts will help maintain your equipment in top condition.

ARO PRO Series pumps are cost-efficient, reliable and well proven transfer pumps with simple construction and a limited number of features and options. In contrast, EXP Series pumps are aimed at process operators and more challenging applications. They cover a wider operating range and incorporate unique design features such as long-life diaphragms and precision air valves to prevent stalling. Such features improve service life and reduce long-term ownership costs, elevating them above the competition. An optional electronic interface outputs signals to PLC’s, PC’s or ARO’s own process control device, thereby providing automation for batch dispensing operations.