Rotary Pumps - Gear, Flexible Impeller, Screw

These pumps have a set of rotating gears, flexible impellers, screw rotor or vanes connected to a driven shaft. Therefore most of these pumps incorporate a mechanical seal, packing or lip seal along the shaft at its back end in order to keep the fluid from leaking along the shaft. There are a few models, which are magnetically coupled and thus seal-less. Another type which is seal-less is the Peristaltic which uses a rotating roller assembly to compress a hose over a given arc length. These pumps are very reliable in pumping medium to thick liquids which typically are not handled by Centrifugal pumps and in applications where medium to high discharge pressures are needed at low flow rates. Varying the motor speed easily controls their output. Most units include some sort of built in relief valve, but those that do not must have one installed into the piping to prevent a dangerous over pressure condition. Not recommended for liquids with fine abrasives or thin non-lubricating liquids like water that will accelerate pump wear.Typical Positive Displacement Rotary pumps include helical gear, spur gear, lobe, progressive cavity, peristaltic, flexible impeller and sliding vane to name a few.

Aquatec Pumps

Variable speed constant PSI 115v

5501-2D01-V578

$320.00

Variable speed, constant pressure pumps. 3 min time out if no water present. These pumps integrate a state-of-the-art digital controller. This unique intelegant controller makes the pumps able to maintain a constant pressure (within 2 PSI) for ...

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Flojet Pumps

Industrial Demand Pump

2100-789

$208.00

Spray pump is a Duplex Diaphragm demand pump 115v. Use as a carpet cleaning machines, solar water pump or any other powered shower, sprinkler, misting system. Demand switch automatically turns the spray pump on and off when discharge valve is o...

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Aquatec Pumps

5 chamber 12V diaphragm pump

5513-1E12-B636

$199.00

12vdc 550 Series Super Flow Pump: Reverse Osmosis System Pump, High Powered RO / DI Reverse Osmosis 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 designe...

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AMT Pumps

3" Electric Diaphragm Pump

337E-96

$3,378.00

Electric Diaphragm water pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm trash pumps are designed to pump mud, slu...

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AMT Pumps

3" Electric Diaphragm Pump

337T-96

$3,378.00

Electric Diaphragm water pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm trash pumps are designed to pump mud, slu...

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Pulsafeeder

Digital Control Peristaltic 26 GPD/100 PSI

CTPD4HSA-PAP1

$1,438.20

CTP-D is for applications requiring precise feed rates, offering digital control from 10% to 100%
Simplified operation. Push-button prime switch and on-off dial provide quick, safe start-up.

High-strength Norpreneï½® peristaltic tubing is rated f...

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Pulsafeeder

Digital Peristaltic Pump

CTPD2HSA-PAP1

$1,516.50

Peristaltic chemical pump 7 GPD. CTP-D is for applications requiring precise feed rates, offering digital control from 10% to 100%
Simplified operation. Push-button prime switch and on-off dial provide quick, safe start-up.

High-strength Norprene...

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Aquatec Pumps

115v Electric diaphragm pump

5850-7E12-J574

$193.00

Electric diaphragm pump. These pumps are specifically designed for mobile low flow or low voltage applications such as Expreso coffee, water systems, ice makers, pesticides and fertilizers. Pressure switch set at 60 PSI. Connections are 3/8 " Joh...

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Pulsafeeder

Digital Control Peristaltic 16 GPD/110 PSI

CTPD3HSA-PAP1

$1,438.20

CTP-D is for applications requiring precise feed rates, offering digital control from 10% to 100%
Simplified operation. Push-button prime switch and on-off dial provide quick, safe start-up.

High-strength Norpreneï½® peristaltic tubing is rated f...

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Aquatec Pumps

5 chamber diaphragm pump 230V

5513-1E12-B706

$199.00

550 Series Super Flow Pump: 230V Reverse Osmosis System Pump, High Powered RO / DI Reverse Osmosis 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 desig...

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