My Cart

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.
View as List Grid

Items 221-230 of 486

Set Descending Direction
per page
  1. General Pump

    LH 3Plex Plunger 148.1hp

    LH5517

    $46,153.07
    A heavy-duty industrial pump with a nickel-treated, spheroidal cast iron manifold and internal gearbox.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: 80 mm BSP-F
    • Discharge Port Thread: 36 mm BSP-F
    • Shaft Diameter: 1.96...
  2. All-Flo Pumps

    Conductive Nylon AODD Pump

    CN-025B

    $513.15
    Although the air powered pump eliminates ignition from electrical motors and internal combustion engines when pumping flammable fluids there is still the possibility of static electrical charge build up on the outside of the pump. All-flo now p...
  3. General Pump

    LH 3Plex Plunger 148.4hp

    LH4017

    $46,153.07
    A heavy-duty industrial pump with a nickel-treated, spheroidal cast iron manifold and internal gearbox.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: 80 mm BSP-F
    • Discharge Port Thread: 36 mm BSP-F
    • Shaft Diameter: 1.96...
  4. All-Flo Pumps

    Stainless Steel Air Operated Diaphragm Pump

    A150-N33-SS3E-B70

    $7,914.95
    Stainless Steel AODD Pump 1 1/2". 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 PP, PVDF, Nylon, Conductive Nylon, Al and 31...
    Santo Diaphragm Learn More
  5. General Pump

    LH 3Plex Plunger 151.1hp

    LH4517

    $46,153.07
    A heavy-duty industrial pump with a nickel-treated, spheroidal cast iron manifold and internal gearbox.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: 80 mm BSP-F
    • Discharge Port Thread: 36 mm BSP-F
    • Shaft Diameter: 1.96...
  6. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SB-15

    $4,283.40
    Stainless Steel AODD Pump 1 1/2". 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 PP, PVDF, Nylon, Conductive Nylon, Al and 316S...
  7. General Pump

    LH 3Plex Plunger 154.1hp

    LH5017

    $46,153.07
    A heavy-duty industrial pump with a nickel-treated, spheroidal cast iron manifold and internal gearbox.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: 80 mm BSP-F
    • Discharge Port Thread: 36 mm BSP-F
    • Shaft Diameter: 1.96...
  8. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A150-F33-TT3T-B70

    $9,458.88
    Stainless Steel AODD Pump 1 1/2". 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 PP, PVDF, Nylon, Conductive Nylon, Al and 31...
  9. General Pump

    LH 3Plex Plunger 157.6hp

    LH6017

    $46,153.07
    A heavy-duty industrial pump with a nickel-treated, spheroidal cast iron manifold and internal gearbox.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: 80 mm BSP-F
    • Discharge Port Thread: 36 mm BSP-F
    • Shaft Diameter: 1.96...
  10. All-Flo Pumps

    Air Operated Double Diaphragm Pump

    AL-30

    $3,366.00
    Air Diaphragm Pump 3". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Geolast is a nitrile and polypropylene blend. When checking for chemical re...
    Aluminum 3" Learn More
View as List Grid

Items 221-230 of 486

Set Descending Direction
per page