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Polypropylene Air Operated Double Diaphragm Pump

  • Product Name:

    Polypropylene Air Operated Double Diaphragm Pump

  • Model Number:

    PB-20

Gallons Per Hour:
10800 (180 GPM)
2" PolyPro
SKU
PB-20
$3,024.75
allflo_al20.jpg
Polypropylene AODD Pump 2" NPT. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in Alum, PVDF, Nylon, Conductive Nylon, Al and 316SS from .25” to 2”. Geolast is a nitrile and polypropylene blend. When checking for chemical resistance on Geolast, use the resistance recommendation for nitrile (trade name Buna-N). Click here to Learn How to Size your Diaphragm Pump and for a Material Selection Guide
More Information
Model Number PB-20
Warranty (YRS.) 5
Max Flow (GPM.) 180
Max Flow GPH 10800
TDH Maximum (Ft) 230
TDH Maximum (PSI) 100
Inlet Connection Type FNPT
Inlet (In.) 2
Outlet Connection Type FNPT
Outlet (In.) 2
Wetted Materials PolyPro
Elastomers / O-ring Buna-Nitrile
Motor Air-Pneumatic
Self Priming Yes
Suction Lift (FT.) 15
Max Operating Temperature (F) 150
Viscosity Catsup 3000.00 cp 20000.00 ssu
Mechanical Seal No
Mechanical Seal Type Double
Applications Coolant, Drum, Fuel Oil, High Pressure, Ink, Machine Tool, Metering, Paint, Parts Washer, Self-Priming, Slurry, Slush & Sludge, Solvent, Sump
Other min. air 20 psi, max. air 4 cfm. Air inlet 3/4"
Drain Yes
Port Rotation Yes
Weight (Lbs) 61.000000
Time to Ship (DAYS) 2-3 days

Supporting Docs

Supporting Docs
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pdf
(Size: 104.65 KB) Extension: pdf

How a AODD works: Two diaphragms connected by the diaphragm rod work in unison to create the liquid motion of the pump. While one side is in suction mode the other is in discharge mode. As a diaphragm moves inward it creates suction. This suction motion causes the balls to move towards each other. As this happens the top valve closes and the bottom valve opens. This allows liquid to enter the chamber through the bottom port.

As the diaphragm moves outward the discharge motion causes the balls to move away from each other. As this happens the top valve opens and the bottom valve closes. This allows liquid to exit the chambers and discharge through the top port. This process constantly alternates between the two chambers to create a continuous cycle. The pump diaphragms are driven by pressurized air that is directed left and right by the movement of the main air valve.

Here’s how it works: When air pressure is applied to the pump, the main air valve moves up and down. When the main air valve is in the down position, air pressure is diverted to the right diaphragm. At the same time, exhaust air from the left diaphragm passes through the shuttle and shuttle plate, and exits the rear of the pump. When the main air valve is in the up position, air pressure is diverted to the left diaphragm while the right diaphragm is exhausted. This process constantly alternates between the up and down position to create a continuous cycle.

All-Flo is a leading manufacturer of fluid handling solutions for industrial markets. Since 1986, our Air Operated Double Diaphragm pumps have provided customers with simple solutions for challenging applications. All-Flo’s pumps are made from the widest range of metallic and plastic materials and are suitable for virtually any fluid transfer application. All-Flo was purchased by PSG in 2019.

PSG® (Div of Dover)  is a global leader in the manufacture of pumps, systems and related flow-control solutions for the safe, efficient and reliable transfer of critical and valuable materials. PSG features world-class pump brands 

Dover is a diversified global manufacturer with annual revenue of over $7 billion.