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 ARO - pneumatic diaphragm pumps
Models - Metallic and Non-metallic
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Metallic diaphragm pumps from Ingersoll-Rand ARO allow you to match a variety of application requirements. These pumps are available in 1/2", 1", 1 1/2", 2" and 3" port sizes, with flow rates ranging from 49 -to- 1040 liters per minute.
- Materials of construction: Aluminum, Stainless Steel, Cast Iron and Hastelloy
- Diaphragm material: Santoprene®, Nitrile, PTFE, Viton®, Hytrel®, Medical grade Santoprene®
For more pump models go to the ARO pump models page pagina
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Non-Metallic diaphragm pumps from Ingersoll-Rand ARO allow you to maximize fluid compatibility. These pumps are available in 1/4", 1/2", 1", 1 1/2" and 2" port sizes, with flow rates ranging from 17 -to- 696 liters per minute.
- Materials of construction: Polypropylene, Kynar (PVDF) and Groundable Acetal.
- Diaphragm material: Santoprene®, Nitrile, PTFE, Polyurethane, Viton®, Hytrel®, Medical grade Santoprene®
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Aro, Owner of the “Unstallable” Air Valve Design
As relevant today as the day it came to market, ARO is still the sole
owner of the technology and the title: Unstallable. ARO uses no magnets,
springs, re-set buttons, or other secondary actuators to insure pump
shifting - only air.
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ARO’s patented “unbalanced” major air valve has constant air pressure
applied to its small end. This assures that the pump resets. Competitive designs lose their signal during every shift, making them vulnerable to stalling. |
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To reverse the valve, air pressure is supplied to the larger end of the
valve, allowing the valve to shift - note that constant air pressure continues to be applied to the
small end. |
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The Ice Age Is Over
Following closely on the heels of pump stall-out is the infamous freezing problem
inherent in most diaphragm pumps. At ARO, the ice age has been over since the
introduction of our unique, enlarged “Quick Dump™” patented air exhaust valve,
which diverts air exhaust from critical, ice-prone passages. Available on the
ARO 2” (Ball & Flap) and 3” diaphragm pump models.
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When the main valve opens and pressurizes the diaphragm air chamber, the Quick Dump operates like a normal air passage and admits
air into the diaphragm’s air chamber. |
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When the main air valve is ready to exhaust, the Quick Dump diverts all of the cold/wet exhaust air coming from the diaphragm air chamber away from the main air valve, avoiding ice formation in the critical valve passages. |
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For Safety, Reliability and Ease of Assembly: Bolted Is Better
ARO Diaphragm Pumps feature bolted construction to avoid the proven problems
created by clampband type pump fasteners. These include material spills and leaks, bolt
loosening and breakage due to poor joint integrity, and difficult reassembly.
Lost Air Is No Bargain
If your pneumatic pumps are not ARO Pneumatic Pumps, chances are their
air valves are blowing out perfectly good air to atmosphere, at no small
expense. And this is not intermittent. This is whenever and wherever these
pumps are operating.
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The close fitting air valve designs used on competitive
pumps allow air to by-pass continually - wasting air - even
when not pumping! |
Contact the sales staff for the right ARO diaphragm pump for your typical application.
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