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 included material spills and leaks, bolt loosening and breakage due to poor joint.

An Air Valve that Forgives and Forgets

Aro's major air valve requires no added lubrication and the "wiping" action of the seals makes it extremely forgiving of contaminated compressed air supplies.

The close fittings air valve designs used on competitive pumps allow air to by-pass continually - wasting air - even when not pumping!

If your diaphragm pumps are not ARO Diaphragm 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.