Pro-Series Diaphragm Pumps
Overview Program
Pro-Series Diaphragm Pumps Overview
• Pro-Series Pumps
– Complete Pump Line
 Metallic / Non-Metallic Models
– Feature Benefits
 Pro-Series Value Proposition
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Pro-Series Pumps
• A complete Diaphragm Pump line
– 1” through 3” Metallic Models
 Aluminum, Stainless and Cast Iron
– 1” through 2” Non-Metallic Models
 Polypropylene and PVDF
• Capable of meeting the most demanding
pump applications
– When performance & reliability are critical
– Features that provide excellent reliability
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Non-icing motor
Non-stalling air valve
Bolted Construction
High Flow rate
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Stainless Steel Models
• For Transfer of Aggressive Fluids
– pH of 0-3 and 11-14
• 666251-X-C
– 2” Ports NPT & BSP
– 172-gpm (651-lpm)
• 666301-X-C
– 3” Ports NPT & BSP
– 237-gpm (897-lpm)
• Investment cast wet ends provide:
– Smooth clean internal/external surface
finish
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Cast Iron Models
• Provides Superior Abrasion
Resistance
– Excellent life in wastewater, sump
and abrasive slurry applications
 For fluids with pH of 4-5 and 9-10
– 666252-X-C
 2” Ports NPT & BSP
 172-gpm (651-lpm)
– 666302-X-C
 3” Ports NPT & BSP
 237-gpm (897-lpm)
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Feature-Benefits: Unbalanced Air Valve
• Feature Description
– Center section of valve is
constantly pressurized
 Automatically resets valve to
prevent stalling
• Benefit
– Eliminates stalling associated with
competitive brands utilizing a
balanced valve
– Ensures pump operates on
demand
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Pro-Series Valve Operation
• Step 1:
– Valve is at rest
– Air is supplied to the Right
Diaphragm Chamber
– Left Diaphragm Chamber
exhausts to atmosphere
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Pro-Series Valve Operation
• Step 2:
– Pilot Rod shifts, sending
signal to large end of
Major Valve
 Major Valve shifts
– Right Diaphragm
Chamber exhausts to
atmosphere
– Air supplied to Left
Diaphragm Chamber
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Pro-Series Valve Operation
• Step 3:
– Pilot Rod shifts, signal to
large end of Major Valve
is eliminated
 Major Valve resets
– Air supplied to Right
Diaphragm Chamber
– Left Diaphragm Chamber
exhausts to atmosphere
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Feature-Benefits: O-Ring Seal
• Feature Description
– Major valve rides on O-rings as it
reciprocates in air motor
• Benefit
– Eliminates blow-by of compressed
air at Air Valve
 When fluid flow stops, the flow of
compressed air also stops
– O-Rings wipe away contaminants
from air supply
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Feature-Benefits: No-Lube Operation
• Feature Description
– ARO Diaphragm Pumps DO NOT
require air line lubricant
– Use a Filter/Regulator on air inlet
 Recommended F-R in each
catalog
• Benefit
– One less maintenance step
 Instruct customer not to use oils
that harm the pump: ATF,
Vaseline, Tool Oil, Valve Oil,
Ethylene-Glycol, WD-40, etc.
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Note: “No-Lube Operation” means
no air-line lubricant is required.
Feature-Benefits: Bolted Construction
• Feature Description
– IR/ARO diaphragm pumps use
eight bolts to secure fluid caps to
the pump center body
• Benefit
– Avoids leakage associated with
band-clamp fasteners
 Band clamps stretch and fatigue
– Provides uniform torque across
seal point
 Avoids leaks
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Feature-Benefits: Ease of Maintenance
• Bolted Construction
– Speeds repair process
 Easier to re-assemble
 Provides better alignment/ seal
between components parts
– Pre-assembled Service Kits
 Include items to conduct normal repair
 Simplify ordering process
– O-Ring Seal
 Air motor elastomers are wear items
 Does not require replacement of full
spool/valve-body assemblies
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Pro-Series Diaphragm Pumps Overview
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