My Cart

Reciprocating Pumps - Diaphragm, Piston, Plunger

These pumps have a diaphragm, piston or plunger which is reciprocating back and forth through a fixed stoke length. The diaphragm pumps use a circular semi-flat membrane that is flexed from a concave to a convex shape within a sealed chamber. There is no actual sliding contact of parts in the pumping chamber and therefore these pumps can handle solids, slurries, fibrous and very thick liquids quit well. Most diaphragm pumps are air operated, but electric do exist. Electric models are typically very small with several individual diaphragms working in series being driven by a rotating angled cam or a single diaphragm being driven by a mechanical connection to a solenoid. In this case, they are typically designed as metering pumps. Piston pumps like the name implies have a piston, ceramic typically, reciprocating within a very tight tolerance cylinder. Because of their materials of construction and mechanical design, they produce extremely high discharge pressures. By making them with several pistons working together in a single head a semi-steady flow can be obtained. With any of these pumps special consideration must be given to the cyclic pressure or hydraulic pulsation’s which naturally occur.Typical Positive Displacement Reciprocating pumps include AODD, single diaphragm, electric diaphragm, metering or proportioning and piston to name a few.
View as List Grid

Items 1-10 of 59

Set Descending Direction
per page
Page
  1. Remco - 2240-1B1-101

    Remco

    12v Demand Spray Pump

    2240-1B1-10I
    $96.12

    12v Demand Spray Pump.

    1gpm 12v pump with On / Off switch. Economy Plus series. Far and away the best selling 12vdc pump in the industry. Choose from standard models or configure to meet the special needs of your OEM application. Replace Delevan ...

    12vdc On/Off switch 1gpm 40psi Learn More
    Add to Wish List Add to Compare
  2. Remco - 2240-1B1-10E

    Remco

    12v Demand Spray Pump

    2240-1B1-10E
    $96.12

    12v Demand Spray Pump.

    Far and away the best selling 12vdc pump in the industry. Choose from standard models or configure to meet the special needs of your OEM application. Replace Delevan 2200 pumps on Snowex Trynex spreaders. Long-life (2000 ho...

    12vdc Learn More
    Add to Wish List Add to Compare
  3. Pulsafeeder LC54SA-PTC1 Metering Pump - 30 GPD/80 PSI

    Pulsafeeder

    Metering Pump - 30 GPD/80 PSI

    LC54SA-PTC1
    $642.00
    Our lowest cost model; Manual function control for stroke length; Highly reliable timing circuit; EMI resistant; Thermally protected solenoid with auto-reset, Bleed valve assembly. Four compact and rugged models with capacities up to 30 GPD @ 80 ...
    Learn More
    Add to Wish List Add to Compare
  4. Flojet LF152421 Demand Spray Pump

    Flojet Pumps

    Demand Spray Pump

    LF152421
    $179.00
    Demand Spray Pump. Far and away the best selling pump in the industry. Choose from standard models or configure to meet the special needs of your OEM application. Long-life (2000 hours typical) motors have either a chemically resistant plastic ho...
    12vdc Learn More
    Add to Wish List Add to Compare
  5. Pulsafeeder LPA2SA-PTC1 Metering Pump 6 GPD/150 PSI

    Pulsafeeder

    Metering Pump 6 GPD/150 PSI

    LPA2SA-PTC1
    $928.53
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
    Learn More
    Add to Wish List Add to Compare
  6. Pulsafeeder LB04SA-PTC1 Chemical Metering Pump

    Pulsafeeder

    Chemical Metering Pump

    LB04SA-PTC1
    $1,291.08
    Chemical metering pump. 25GPD The Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 4 distinct flow/pressure envelops
    • 100:1 turn down ratio
    • Internally dampened to reduce noise - ideal f...
    Learn More
    Add to Wish List Add to Compare
  7. Pulsafeeder LPB2SA-PTC1 Metering Pump 5 GPD/250 PSI

    Pulsafeeder

    Metering Pump 5 GPD/250 PSI

    LPB2SA-PTC1
    $848.16
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
    Learn More
    Add to Wish List Add to Compare
  8. Remco 3313-1E1-52C 115v Demand Pump 2.2GPM

    Remco

    115v Demand Pump 2.2GPM

    3313-1E1-52C
    $206.41

    115v Demand Pump 2.2GPM

    3313 series no longer available review 3323-1E1-52C

    Demanding industrial pump environments require precise engineering and quality components, the demand pump was designed with both. Demand pumps operated as a positive di...

    2.2GPM 60PSI 115AC Learn More
    Add to Wish List Add to Compare
  9. Remco 5536-1E1-731A 24v Demand Pump

    Remco

    24v Demand Pump

    5536-1E1-731A
    Call For Price

    New Model Number: 5536-1E1-731B

    Demanding industrial pump environments require precise engineering and quality components葉he demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure swi...

    4GPM 60PSI 24DC . This product has been discontinued and is no longer available. See related products for a similar alternative Learn More
    Add to Wish List Add to Compare
  10. Remco 5538-2I1-94A Street Sweeper Pump 60PSI Bi-pass

    Remco

    Street Sweeper Pump 100PSI Bi-pass

    5538-2I1-94A
    $426.00

    Street Sweeper pump.

    THE PROFLO FATBOY BYPASS PUMPS UP THE VOLUME WITH 7GPM. Demanding industrial pump environments require precise engineering and quality components in the ProFlo FatBoy was designed with both. To maximize the potential of all f...

    7GPM 100PSI 12VDC Learn More
    Add to Wish List Add to Compare
View as List Grid

Items 1-10 of 59

Set Descending Direction
per page
Page
Compare Products
  1. Remove This Item
Compare
Clear All
Shop By
Now Shopping by
  1. Category Electric Diaphragm Pumps Remove This Item
Clear All
Shopping Options
Phase (Ø)
  1. Single (1) 32 items
Voltage (Range)
  1. 110-120 34 items
  2. 12/24/36 VDC 25 items
inlet size
  1. Less than 1in 25 items
PRICE $
$  -  $
Manufacturer
  1. Aquatec Pumps 2 items
  2. Flojet Pumps 1 item
  3. Pulsafeeder 21 items
  4. Remco 35 items
Motor
  1. Hermetically Sealed 1 item
  2. TEFC 16 items
  3. TENV 35 items