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 pulsationâ€™s which naturally occur.Typical Positive Displacement Reciprocating pumps include AODD, single diaphragm, electric diaphragm, metering or proportioning and piston to name a few.

Remco

115v Demand Pump 5.3GPM

5537-1E1-58C

$232.62

Demanding industrial pump environments require precise engineering and quality components—the demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

5.3GPM 60PSI 120v NPT Learn More

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Remco

Demand/Bypass

5517-1E1-58C

$217.33

115v AC electric diaphragm pump. PROFLO 5500 OVERVIEW Engineered to withstand the most rigorous and punishing duty cycles, the ProFlo 5500 Series Pump is a top-line performer. We make this claim because we use the highest quality American Made pum...

5.3/gpm 60psi 115v Learn More

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Remco

115v Demand Pump 2.2GPM

3313-1E1-52C

$206.41

115v Demand Pump 2.2GPM

Demanding industrial pump environments require precise engineering and quality components, the demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch built in....

2.2GPM 60PSI 115AC Learn More

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Remco

115v Demand Pump 1GPM

3321-1E1-52C

$206.41

Diaphragm pump with automatic switch. Demand

Demanding industrial electric pump environments require precise engineering and quality componentsè‘‰he demand pump was designed with both. Demand pumps operated as a positive displacement pump which h...

1GPM 60PSI 115AC Learn More

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Remco

FatBoy Demand Pump

5538-1I1-69C

$399.71

THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 7GPM. Demanding industrial pump environments require precise engineering and quality componentsè. The ProFlo FatBoy® was designed with both. To maximize the potential of all five diaphragm chambers, Remc...

7GPM 100PSI 115V Demand NPT Learn More

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Remco

115v Demand Pump 100PSI

5537-1i1-65C

$232.62

115v Demand Pump 100PSI

Demanding industrial pump environments require precise engineering and quality components the Remco demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch buil...

2.2GPM 100PSI 120v NPT Learn More

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Remco

FatBoy Demand Diaphragm Pump

5538-1E1-69C

$412.56

THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 7GPM. Demanding industrial pump environments require precise engineering and quality components. The ProFlo FatBoy® was designed with both. To maximize the potential of all five diaphragm chambers, Rem...

7GPM 60PSI 115V NPT Demand Learn More

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Aquatec Pumps

Hi-Flo Dem Pump

5503-1E12-J526

$198.00

4.9 GPM 60PSI Demand delivery pump. OPERATION: The 550 pumps can draw water from a holding tank and pressurizeit, or boost the pressure from a low pressure source. It is designed to operate intermittently, but most versions can run continuously f...

5GPM 60PSI 115v Learn More

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Remco

115v Demand Pump 4GPM

5536-1E1-58C

$214.92

Demanding industrial pump environments require precise engineering and quality components. The demand pump was designed with both. Demand pumps operate as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

4GPM 60PSI 120v Learn More

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Remco

115v Demand Pump 2GPM

3323-1E1-52C

$206.41

Demanding industrial pump environments require precise engineering and quality components. The demand pump was designed with both. Demand pumps operate as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

2GPM 60PSI 115AC Learn More

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