Pumps: IR

ARO® is a manufacturer of fluid management products that are skillfully engineered to deliver performance and serviceability, allowing success to flow freely in our customers’ businesses. That’s why ARO® is fluid intelligence—the smart choice in fluid management products for industrial operations. With over an 85-year legacy of premier product performance and service excellence, ARO® provides fluid management equipment for customers and industries around the globe, including chemical, manufacturing, energy, pharmaceutical, mining and more. ARO® has the right product to meet our customers’ specific needs. We offer air-operated diaphragm pumps, piston pumps and packages, filters, regulators, and lubricators (FRLs), lubrication equipment, and pneumatic valves and cylinders.

ARO- Piston Pump

Horizontal Split Case Fire Pump

Water-Based Fire Suppression System: The Armstrong Series 4600f is the state of the art in Horizontal Split Case pumps, meeting or exceeding the requirements of nfpa as well as fire protection testing laboratories such as ul, ulc and fm. The compact pump design and reduced footprint make the4600f perfectly suited for use in new construction, packaged fire systems and retrofit installations. Durability
  • Oversized stainless steel shaft is rated for min. 5000 run hours Double suction impeller prevents wear due to imbalanced flow
  • Sealed, permanently-greased bearings prevent seizing Externally mounted combination bearing and seal housing minimises shaft deflection
Easy Maintenance
  • Fitted with drain connection for drip containment
  • Replaceable case wear rings − Locked to prevent rotation or axial displacement
  • Hydraulically balanced double suction impeller minimises axial thrust
  • Three-piece split gland shaft sealing
  • Replaceable shaft sleeves


ARO® Pro Series air operated diaphragm pumps are ideal for general industrial and OEM installation applications. They can easily pump from clean, light viscosity fluids to corrosive, abrasive medium viscosity fluids and can transfer large particles without damage. Due to their pneumatic motor, they may be used in potentially explosive areas. Most of the ARO® diaphragm pumps are ATEX certified (CE Ex11 2GD X). ARO® PRO and EXP Series pumps offer the ability to vary the flow outlet and discharge pressure as slow as 0.26 gallons (1liter) per minute up to 275 gallons (1040 liter) per minute for our larger sizes and adjust fluid pressure up to 125 p.si. (8.6 bar), by using just an air filter/regulator and a needle valve.

ARO® EXP Series Diaphragm Pumps

ARO® EXP Series diaphragm pumps include all the benefits of standard air-operating pumps, but with significant additional features and benefits.
  • Electronic Interface capability, assuring consistent flow rates and pinpoint control
  • Patented SimulShiftTM “unstallable” air balanced valve design which avoids stalling issues associated with other pumps
  • Quick DumpTM check valves that divert cold exhaust air from ice-prone components, which prevents freezing and downtime
  • Solenoid valve conveniently mounted directly to pump’s major valve