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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.
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  1. Little Giant Pumps

    Flexible impeller pump PP-1S

    555110

    $324.54

    Non-Submersible, Self-Priming Stainless Steel Transfer Pump This lightweight, self-priming, portable pump with stainless steel pump head can be used to empty waterbeds, drain water heaters or aquariums, pump out a basement, transfer water to an...

    115v AC Learn More
  2. Aquatec Pumps

    low flo booster pump

    6840-2P01-B221

    $290.54

    • Toughest, most durable pump on the market • Adjustable max. outlet psi.(regardless of feed pressure) • Expels trapped air (no more air locks) • Can be mounted with pump head up or down • More flow at extremely low inlet pressures • New motor ve...

  3. 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
  4. Aquatec Pumps

    Low flow booster pump kit

    6840-2J03-A331

    $290.54
    Pre-Filter water treatment RO Booster pump. In / Outlets are 1/4" push-to-connect JG style for easy installation into R.O. water supply line. Kit includes 12vdc to 115vac transformer with plug and 20-40 psi pressure switch for use with storage ta...
  5. 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
  6. 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...
  7. 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...
  8. Aquatec Pumps

    Low flow misting pump kit

    8851-2P01-S424

    $319.74
    Veg. misting or Pre-Filter water treatment RO Booster pump. In / Outlets are 1/4" push-to-connect JG style for easy installation into R.O. water supply line. Kit includes 24vac to 115vac transformer with plug and 20-40 psi pressure switch for...
  9. Aquatec Pumps

    Low flow misting pump kit

    8851-2J03-B424

    $290.54
    Veg. misting or Pre-Filter water treatment RO Booster pump. In / Outlets are 1/4" push-to-connect JG style for easy installation into R.O. water supply line. Kit includes 24vac to 115vac transformer with plug and 20-40 psi pressure switch for use...
  10. 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
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