ARO PRO Series Diaphragm Pump, 1″, PP/PTFE | High Flow Rate

This ARO PRO Series diaphragm pump is a high-performance 1″ pump engineered for industrial, chemical and water treatment operations. Constructed with a polypropylene (PP) body and PTFE balls and diaphragms, this pump provides excellent chemical resistance and long-term durability, delivering reliable operation in harsh environments. With PN16 ANSI flange connections, an integral muffler and flow rates of up to 178 LPM, this diaphragm pump is consequently a powerful, compact solution for demanding applications. Whether you're moving corrosive fluids, dosing chemicals, or transferring slurries, the ARO PRO Series 1" diaphragm pump provides the control, reliability and versatility your processes demand.

ARO Part No.: 81643223
ARO Part Code: 6661A3-344-C
Flux Equivalent Part Code: FDM 25 PP/TT
Flux Part No.: 10-M2540100

Pump body material: Polypropylene (PP)

Elastomers: PTFE balls and diaphragms

Connections: PN16 ANSI flange (inlet/outlet), air inlet 1/4″ BSP

Flow Rate: Up to 55 LPM

Operating pressure: Max 6.9 bar

Displacement per cycle: 0.17 gal (0.64 L)

Max suspended solids: 2.4 mm

Dry suction lift: Up to 3 m

Sound level: 71 dB(A) @ 70 PSI

Weight: 3.3 kg

Also includes: Integral muffler for reduced noise levels

Unique ARO unbalanced “D-valve” design eliminates stalling

Unique ARO “SimulShift” valve delivers increased flow with less pulsation

ARO’s PRO Series diaphragm pumps are engineered with patented features that ensure superior performance and also reliability:

1. Bolted construction for leak-free operation: ARO PRO Series pumps feature a bolted housing design, providing a secure, leak-free seal. This design minimises the risk of fluid leakage, further enhancing safety and reducing the chance of environmental contamination. Additionally, the bolted configuration simplifies maintenance, allowing for easy disassembly and reassembly.
Choice of material and porting options: The PRO Series is available in a range of material and porting configurations. Whether dealing with corrosive chemicals or abrasive slurries, there is a pump configuration to suit every application.
3. Self-priming and dry-run capabilities: ARO diaphragm pumps are self-priming and can run dry for limited periods without damage. These pumps provide maximum flexibility – they can be installed in a variety of plant locations and handle a range of liquid viscosities.
5. Scientific advantage – pressure wave damping: Unlike conventional AODD pumps, ARO’s air-operated diaphragm pumps control internal pressure waves more effectively through advanced porting and valve geometry. This reduces cavitation and allows for more accurate, repeatable flow control, even in systems with varying back pressure.
6. Noise and energy reduction: The integral muffler, paired with the unique Simulshift air valve system, significantly reduces operational noise and air consumption. This makes ARO diaphragm pumps not just quieter, but also more energy-efficient—a key advantage in any business.
Optional electronic interface capability: ARO PRO Series pumps can be specified with an electronic interface for remote integration with PLCs and control systems. Therefore, precise control over dosing and batching processes can be achieved, with repeatability within ±1%.

By incorporating these innovative features, ARO PRO Series diaphragm pumps deliver efficient, reliable and safe fluid handling across a multitude of industrial applications.