Positive Displacement Pumps

These pumps are often thought of as high-pressure pumps. Their positive displacement of fluid and fixed volume are the result of the fluid being mechanically moved through their pump passage on a regular cycle. This means that regardless of the system they discharge into, the pressure and volume will remain constant. The power of the driving device and its speed, limit the volume and pressure.Positive Displacement pumps:Flow rates of GPD, CC/min to 100 GPM typically.Discharge pressures of a 1 to 1000 PSI.Low speed and fixed volume per cycle, they handle very viscid fluids well.Smaller than centrifugal pumps.Quiet, do not ad much heat to the fluid, suitable for shear sensitive fluids.Diaphragm pumps can easily pass solids, stringy and fibrous foreign matter. Are made in materials from CI to Titanium and PP, PVDF and PPS engineering resins.

All-Flo Pumps

PP Air Diaphragm pump 1/2"

C050-SPP-TTPT-G70

$1,161.74

PolyPro AODD Pump 1/2". Double diaphragm or air operated diaphragm pump. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Model available in PP Click ...

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Flojet Pumps

Diaphragm Pump 1.9GPM

N5100050A

$300.00

Oil Resistant Acetyl Copolymer housing with Buna Elastomers. 5100-050A Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!
Max. air 80 PSI and .77 CFM For use on water like liquids.

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Flojet Pumps

Diaphragm Pump 1.9GPM

N5100040

$290.00

Oil Resistant Acetyl Copolymer housing with Santoprene, FKM, Geolast and Buna Elastomers. Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!
Max. air 80 PSI and .77 CFM

Neoprene Learn More

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Flojet Pumps

Air Diaphragm pump

G575215A

$214.51

Air driven, pneumatic pump. Glass filled Polypropylene double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy. Often used on water cooling circuit for spot welders. Coolant pump replacement weilander tim...

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Flojet Pumps

Shaft/Slide valve assembly

20751000A

$28.00

Shaft/slide valve assembly for G57 series

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Flojet Pumps

Air Diaphragm pump

G573208

$357.40

Air driven, pneumatic pump. Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.
Connections are 3/8" HB straight. Air connection is 1/4" HB PLASTIC.

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Flojet Pumps

Replacement Diaphragm

20730-000

$16.10

Replacement diaphragm EPDM orings G57 series

EPDM Learn More

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Flojet Pumps

Diaphragm pump

G575205

$214.51

Air driven, pneumatic pump. Sale price as listed above.Glass filled Polypropylene double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy.
Connections are 3/8" straight. Air connection is 1/4" brass.
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3/8" Santoprene Learn More

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Flojet Pumps

Duplex Diaphragm pump

G575175

$214.51

Flojet double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy.
Connections are 1/2" MNPT. Air connection is 1/4" HB brass.

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Flojet Pumps

Duplex Diaphragm pump

G575218

$227.70

Air driven, pneumatic pump. Glass filled Polypropylene double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy.
Connections are 1/2" HB straight. Air connection is 1/4" HB PLASTIC.

These little E...

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