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Low-Flow Positive Displacement Flexible Impeller Pump, 120 VAC

Item# DO-75421-00

$186.40 USD/EACH

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  • Pumps fluids in applications where durability is needed—the 12 VDC models are ideal for remote/portable use
  • Pharmaceutical—processing lab solutions, lotions, preparations, and filtering solutions
  • Industrial—circulating and transferring corrosive liquids, transferring solutions with entrained air (such as soaps and detergents), sampling, and pilot plant installations
  • Agricultural—transferring liquid fertilizers, herbicides, and pesticides
  • Metal plating—filtration of plating solutions, filling, and emptying vats
We offer the widest selection of pumps and fluid handling instruments in the industry. Plus we can special order virtually any pump your application may require!

Air-Powered Pumps contain no heat-generating electrical components, allowing safe, explosion-proof operation in hazardous areas.

Pumps require input from a compressed-air source; available in bellows and diaphragm models.

Bellows Pumps move fluid or gases through the cavity created by reciprocating bellows coupled to a driving rod.

Diaphragm Pumps pulse one or two flexible diaphragms to gently displace liquid; check valves control direction of fluid flow.

Flexible Impeller Pumps contain an elastomeric impeller that traps fluid between blades and sweeps it through the pump housing. These low-cost utility pumps are ideal for general transfer.

Flexible Liner Pumps gently push fluid between the outer surface of a flexible liner and the inner surface of a rotating body block; can pump 20% soft solids.

Hose Pumps offer a high-capacity, high-pressure option that operate on the peristaltic hose pump technology. Product is available in both dry-running and lubricated designs.

Pressure Washers/Plunger Pumps combine a high-pressure pump with spray accessories to provide a self-contained high-pressure washing system.

Progressing Cavity Pumps (rotary screw pumps) force high-viscosity (up to 20,000 cp) and particulate-laden fluids through the cavity between the screw-style rotor and stator.

Roller Pumps have spinning rollers that create a vacuum to draw in liquid to carry to the outlet port. They provide no metal to metal contact; fluid contacts only the rollers or pump housing.

Rotary Lobe Pumps are excellent for CIP/SIP applications where cleanability of the machine needs to be maintained. They also are ideal for flows at higher pressures.

Rotary Vane Pumps are similar to flexible impeller pumps, except that they have a rigid impeller made of carbon/graphite. Pumps provide high-pressure, low-shear pumping.
Low-Flow Pumps are deal for gas-laden fluid transfer applications. Built-in thermal overload protection prevents motor damage.

What's included: Model 75421-00 includes a 6-ft power cord.
Product Type Flexible Impeller Pumps
Wetted materials Body: 30% glass-filled polyester; Impeller and Lip seal: Buna N
Port size 3/8" NPT(F)
3/4" GHT(M)
Max flow rate (LPM) 14.4
Max flow rate (GPM) 3.8
Max temperature (º C) 85
Max temperature (º F) 185
Max pressure (psi) 10
Max pressure (bar) 0.7
Run dry No
Model 3000-100
Suction lift (wet) 2.3 m
Qty/ea 1
Manufacturer number 3000-100
Self-priming 7.5 ft
Particulates No
Motor (hp) 1/20
Power (Amps) 0.77
Power (Hz) 60
Power (VAC) 115
Duty cycle Intermittent
Shaft material SS
Motor type TENV
Dimensions 6"L x 4-1/2"W x 4-1/4"H

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Questions and Answers

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Get answers from real customers and in-house experts with AnswerBox.

6 Questions | 6 Answers
Displaying questions 1-6
  • Q:

    If we use the pump for suction through a small opening, with discharge into the source (we're building a degassing system) what kinds of volumetric flow rates can we expect?
    Asked on 9/3/2015 by Nelson from Taipei, Taiwan

    1 answer



      Thee flow rate of this unit depends on the back pressure (or feet of head) from the suction:

      5 ft of head = 330 GPH
      10 ft of head = 300 GPH
      20 ft of head = 240 GPH
      30 ft of head = 145 GPH
      40 ft of head = 62 GPH

      If you would like an adjustable flow rate you can put a valve on the discharge side of the pump.

      Answered on 9/3/2015 by Katie from Technical Support
  • Q:

    I need a pump to transfer hand soap from a five gallon bucket into a one gallon reservoir
    Will this pump be suitable?
    Asked on 6/20/2014 by WRB

    1 answer



      Flexible impeller pumps are not always the best to move viscous fluids. If your soap has a viscosity of 500cp or less, I would not expect you to have any problems.

      Answered on 6/23/2014 by Jay from Technical Support
  • Q:

    Is the flow rate of this pump adjustable? If so, what is its minimum flow rate?
    Asked on 4/19/2010 by Anonymous

    1 answer



      This unit is a fixed speed pump, but the flow rate does depend on the back pressure (or feet of head). You can use a valve on the outlet to trottle down the flowrate but it would not provide very accurate flow. A meetering pump such as a peristalic pump may be a petter option you are looking to control the flowrate with percision.

      For 75421-00 pump:
      5 ft of head = 330 GPH
      10 ft of head = 300 GPH
      20 ft of head = 240 GPH
      30 ft of head = 145 GPH
      40 ft of head = 62 GPH

      Answered on 4/20/2010 by Aaron from Schneider
  • Q:

    Will this pump be okay to use for me to move water from an upside down lid that holds water all the time and pump it to a sink?
    Asked on 1/20/2010 by Cindy from Seattle, WA

    1 answer



      Yes, this pump may be used for that application. Please note that flexible impeller pumps will prime on its own, but it should not be run dry.
      Please contact our technical application specialists for additional assistance (contact information can be found on the product web page).

      Answered on 1/22/2010 by Jen from Technical Support
  • Q:

    will this handle the transfer of wine,with some pulp and a few seeds in a quantity of 60 gallons between cleaning?
    Asked on 10/13/2009 by home wine maker from waldo,oh

    1 answer



      Yes, flexible impeller pumps can handle some particulates in the fluid stream and the wine is compatible with the wetted parts.

      Answered on 10/15/2009 by Jen from Technical Support
  • Q:

    Do you sell the replacement impeller for this model ?
    Asked on 7/6/2009 by Ed from KANSAS

    1 answer



      We do, please reference part number 00117BC.

      Answered on 7/8/2009 by Jen from Technical Support
Displaying questions 1-6

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