Page 2 - Ingersoll Rand - ARO Pro Series Diaphragm and Piston Pumps

Pro-Series Pumps

Introducing the New High-Performance Pro’s: PD05, PD03

Unbalanced valve design eliminates Diaphragm Moving Right to Left Diaphragm Moving from Left to Right
valve centering and pump stall-out-
even under low air inlet pressures.
A A
“D” Valve B B

w Provides a positive seal.
w Helps insure optimum energy
efficiency while avoiding costly
air “blow-by.” C C
w Ceramic construction insures long
service life.
“SimulShift™” Valve 1) The diaphragm pushes the right At end of stroke:
Actuator Pin (B) mechanically moving 1.) Diaphragm pushes Pin (B) and
w Provides an ultra-positive, reliable the SimulShift Valve (A) to the left. SimulShift Valve (A) to the right.
shift signal that avoids stall-out. 2.) Large ends of SimulShift Valve (A) and
2.) Compressed air flows to the large side
w Provides faster pump trip-over with of the SimulShift Valve, pneumatically Major Valve (C) are vented to exhaust
more flow. pilot signal.
moving the valve to the position
3.) Constant compressed air supply acting
w Faster trip-over with less pulsation shown. on the smaller areas of the SimulShift
and superior laminar material flow.
3.) Compressed air also flows to the Valve and Major Valve shifts both
large end of the Major Air Valve (C), valves to the right and holds them in
position until the next cycle begins

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