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 111-120 of 318

Set Descending Direction
per page
  1. Stenner

    Dual Head Adjustable mechanical feed rate 120GPD

    170DM4

    $699.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towe...
    6-120GPD Learn More
  2. Oberdorfer Pumps

    1.25" Bronze gear pump

    N1100XN46

    $4,751.50
    1 1/4" Bronze rotary gear pump with relief valve and close coupled to a 1 HP ODP motor.

    Use to pump oil and other viscous thick liquids.

    1HP 115/230v ODP Learn More
  3. Stenner

    Dual head Adjustable rate 100GPD

    100DMHP5

    $695.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towers...
  4. Stenner

    Dual Head Dual Control 70GPD

    170MDC4

    $601.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towers...
  5. Oberdorfer Pumps

    1.25" Bronze gear pump PEO

    N1100

    $2,470.00
    1 1/4" Bronze rotary gear pump with relief valve and to be close coupled to a 1 HP 56C to 3HP 182TC motors of electric or hydraulic type.

    Use to pump oil and other viscous thick liquids as well as diesel and all the de-icing fluids. Uses suc...

    NO motor Learn More
  6. Stenner

    Dual head Fixed rate 100GPD

    100DMP5

    $470.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towers...
  7. Stenner

    Dual head Fixed rate 70GPD

    100DMP4

    $470.00
    G.H. Stenner & Company offers a complete line of highly reliable peristalic chemical feeders. Use for grease trap enzymes, algaecide, biocide, biocidal, antimicrobial, chlorination - chlorine sanitizers and disinfectants injection, cooling towers...
  8. Oberdorfer Pumps

    2" Bronze gear pump

    N26HDM

    $6,488.30
    Long coupled gear pump made of cast bronze. If used above 900 RPM with non-lubricating fluid, then duty cycle is limited to intermittent.

    Continuous duty on lubricating liquids like oils. Use slower speed motor at lower flow rates for water an...

    up to 170GPM Learn More
  9. Oberdorfer Pumps

    3/4" Bronze gear pump 1HP

    N970H-N47

    $4,637.18
    3/4" Bronze rotary gear pump without relief valve and close coupled to a 1 HP 115v/1/60 1725 RPM TEFC motor.Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high performance carbon-gra...
    115/230v ODP 1HP Learn More
  10. Aquatec Pumps

    Ag Elect. diaphragm pump

    5513-1E77-M638

    $319.74

    550 Series Super Flow Pump: These pumps are specifically designed for Ag applications such as MOSQUITO pesticides and fertilizers. 12 VDC SEALED MOTOR. FKM SEALS. Pressure switch set at 60 PSI.

    OPERATION: The 550 pumps can draw water from a holdi...

    12vdc 5GPM 60PSI Learn More
View as List Grid

Items 111-120 of 318

Set Descending Direction
per page