ARO diaphragm pumps

 

 

         

 


Metallic diaphragm pumps from Ingersoll-Rand ARO are adaptable to various application requirements. These pumps are available in the following port sizes: 1/2", 3/4" 1", 1 1/2", 2", and 3", with flow rates ranging from 49 to 1,040 litres per minute.

Materials of construction: Aluminium, RVS, Cast Iron, and Hastelloy
Diaphragm material: Santoprene®, Nitrile, PTFE, Viton®, Hytrel®, and Medical grade Santoprene®
 

 

         

 

Plastic diaphragm pumps from Ingersoll-Rand ARO can increase fluid applications. These pumps are available in the following port sizes: 3/8", 3/4", 1/4", 1/2", 1", 1 1/2", and 2", with flow rates ranging from 17 to 696 litres per minute.

Materials of construction: Polypropylene, Kynar (PVDF) and Groundable Acetal.

Diaphragm material: Santoprene®, Nitrile, PTFE, Polyurethane, Viton®, Hytrel®, and Medical grade Santoprene®

 
ARO, Owner of the "Unstallable" Air Valve Design
As relevant today as it was the day it came to the market, ARO is still the sole owner of the technology and the title: Unstallable. ARO uses no magnets, springs, reset buttons, or other secondary actuators to ensure pump shifting - only air. 
 

 

 

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.

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.

 
 
 
The Ice Age Is Over
Following closely on the heels of the 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" (Balls & Flap) and 3" diaphragm pump models.
 

 

 

When the main valve opens and pressurises the diaphragm air chamber, the Quick Dump operates like a normal air passage and admits air into the diaphragm’s air chamber.

When the main 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.

 
 
For Safety, Reliability, and Ease of Assembly: Bolted Is Better.
ARO diaphragm pumps feature bolted construction to avoid the proven problems created by clamp band 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 diaphragm pumps are not ARO diaphragm pumps, changes are their air valves are blowing out perfectly good air into the atmosphere, at no small expense. And this is not intermittent; this is whenever and wherever these pumps are operating. 
 

 

The close fitting air valve designs used on competitive pumps allow air to bypass continually, which wastes air even when not pumping!



Contact the sales staff for the right ARO diaphragm pump for your typical application.