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 601-610 of 853

Set Descending Direction
per page
  1. General Pump

    Reverse Osmosis pump

    WM2315C DI RO

    $4,130.40
    DI water, RO Pressure pump.Triplex Plunger Pumps. Reverse Osmosis pump good on sea water, marine RO units. Hollow Shaft, Flanged for Direct Couple to Electric Motors (NEMA-56C).
    • Forged 316 Stainless Steel 316SS manifold with exclusive lifetime w...
  2. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000S16

    $1,147.97
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  3. General Pump

    SH 3Plex GB 138.5hp

    SH2017

    $61,484.06
    SH Triplex Plunger Pump. A heavy-duty, high pressure industrial pump with a stainless steel manifold and internal gearbox.
    • Max. Inlet Pressure: 100 PSI
    • Max. Fluid Temp.: 86ï½°F
    • Inlet Port Thread: 1 1/2" BSP-F
    • Discharge Port Thread: 3/4" B...
  4. Hypro Pumps

    Bronze Gear pump

    GMBN2VA33

    $1,369.42
    Rotary Gear pump end. 303 SS fasteners, Ryton gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

    Use for pres...

    1/4" 1/3HP 230/460v Learn More
  5. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SP-10

    $3,862.65

    Stainless Steel AODD Pump 1".

    New PN A100-NA3-TT3T-B70   Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Inlet and outlet manifolds can be rotated s...

  6. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000S17

    $1,254.50
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  7. General Pump

    SH 3Plex GB 150.0hp

    SH2201

    $58,542.59
    SH Triplex Plunger Pump. A heavy-duty, high pressure industrial pump with a stainless steel manifold and internal gearbox.
    • Max. Inlet Pressure: 100 PSI
    • Max. Fluid Temp.: 86ï½°F
    • Inlet Port Thread: 1 1/2" BSP-F
    • Discharge Port Thread: 3/4" B...
  8. General Pump

    SH 3Plex GB 152.9hp

    SH2601

    $53,059.85
    SH Triplex Plunger Pump. A heavy-duty, high pressure industrial pump with a stainless steel manifold and internal gearbox.
    • Max. Inlet Pressure: 100 PSI
    • Max. Fluid Temp.: 86ï½°F
    • Inlet Port Thread: 1 1/2" BSP-F
    • Discharge Port Thread: 3/4" B...
  9. General Pump

    SH 3Plex GB 152.9hp

    SH3001

    $53,059.85
    SH Triplex Plunger Pump. A heavy-duty, high pressure industrial pump with a stainless steel manifold and internal gearbox.
    • Max. Inlet Pressure: 100 PSI
    • Max. Fluid Temp.: 86ï½°F
    • Inlet Port Thread: 1 1/2" BSP-F
    • Discharge Port Thread: 3/4" B...
  10. All-Flo Pumps

    Plastic Air Operated Diaphragm Pump

    A050-SPP-GGPN-S70

    $1,030.50
    PolyPro Air AODD Pump 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. Click here to Learn How to Size your Diaphragm Pump and for a Materi...
View as List Grid

Items 601-610 of 853

Set Descending Direction
per page