Positive Displacement Pumps

Positive displacement pumps are speciality pumps that provide an approximate constant flow of fluid at the fixed speed. Pump trap a fixed amount of the fluid and then force it into a discharge pipe. Positive displacement pumps can produce the same flow at a given speed (RPM) no matter what the discharge pressure is. These type of pumps cannot operate against the closed valve because they have no shutoff head like centrifugal pumps. Positive displacement pumps constantly produce flow and the pressure built within the blocked line will damage the line, pump or both.
The positive displacement pumps can be divided into two main categories:
A. Rotary pumps are very efficient because they can operate even with highly viscous fluids but require a slow steady speed rotation. If the mechanism rotation is too fast, the fluid can cause erosion, which eventually causes enlarged clearances that liquid can pass through and reduce pressure.
Rotary pumps can be divided into three main types:
• Gear pumps: the simplest pump type that pumps liquid using 2 gears.
• Screw pumps: more complicated pump type where the two screws are positioned against each other to pump the liquid.
• Rotary vane pumps: these pumps have a cylindrical rotary engine. As the rotor circulates, vans trap fluid between the rotor and the engine housing, pushing the liquid through the pump.

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Description Price Pump Type Drive Type Maximum Flow Rate Maximum Head Maximum Working Pressure Input Connection Output Connection IP Rating Series Maximum Fluid Temperature Body Material Supply Voltage Input Power Wetted Materials
RS Stock No. 121-8586
Mfr. Part No.BT4B1601PVT2000U1110000
BrandProMinent
£826.56
Each
Units
- Electric 1.1L/h - 16 bar 3/4 in G 3/4 in G IP65 BT4B +20°C PVDF 100 to 230 V 9.6 (Consumption)W PVDF
RS Stock No. 121-8587
Mfr. Part No.BT4B1604PVT2000U1110000
BrandProMinent
£834.66
Each
Units
- Electric 3.6L/h - 16 bar 3/4 in G 3/4 in G IP65 BT4B +20°C PVDF 100 to 230 V 15.2 (Consumption)W PVDF
RS Stock No. 121-8600
Mfr. Part No.DF2A0224P00A10W1
BrandProMinent
£332.29
Each
Units
Peristaltic Electric 2.4L/h - 1.5 bar - - IP65 DF2a +20°C - 230 V 5 (Consumption)W -
RS Stock No. 121-8601
Mfr. Part No.DF4A0W004004P0U120001210
BrandProMinent
£914.71
Each
Units
Peristaltic Electric 0.35L/h - 4 bar - - IP65 DF4a +20°C - 100 to 240 V 24 (Consumption)W -
RS Stock No. 121-8594
Mfr. Part No.GMXa0424PVT20000U11130EN
BrandProMinent
£1,549.33
Each
Units
- Electric 24L/h - 4 bar 3/4 in G 3/4 in G IP65 GMXa +20°C PVDF 100 to 230 V 24 / 30 (Consumption)W PVDF
RS Stock No. 121-8598
Mfr. Part No.DF2A0208P00A10W1
BrandProMinent
£275.49
Each
Units
Peristaltic Electric 0.8L/h - 1.5 bar - - IP65 DF2a +20°C - 230 V 5 (Consumption)W -
RS Stock No. 121-8599
Mfr. Part No.DF2A0216P00A10W1
BrandProMinent
£332.29
Each
Units
Peristaltic Electric 1.6L/h - 1.5 bar - - IP65 DF2a +20°C - 230 V 5 (Consumption)W -
RS Stock No. 121-8602
Mfr. Part No.DF4A0W004015P0U120001210
BrandProMinent
£996.00
Each
Units
Peristaltic Electric 1.5L/h - 4 bar - - IP65 DF4a +20°C - 100 to 240 V 24 (Consumption)W -
RS Stock No. 121-8589
Mfr. Part No.BT4B0413PVT2000U1110000
BrandProMinent
£861.95
Each
Units
- Electric 12.3L/h - 4 bar 3/4 in G 3/4 in G IP65 BT4B +20°C PVDF 100 to 230 V 15.2 (Consumption)W PVDF
RS Stock No. 121-8591
Mfr. Part No.GMXa1602PVT20000U11130EN
BrandProMinent
£1,212.27
Each
Units
- Electric 2.3L/h - 16 bar 3/4 in G 3/4 in G IP65 GMXa +20°C PVDF 100 to 230 V 24 / 30 (Consumption)W PVDF
RS Stock No. 121-8588
Mfr. Part No.BT4B0708PVT2000U1110000
BrandProMinent
£861.95
Each
Units
- Electric 7.1L/h - 7 bar 3/4 in G 3/4 in G IP65 BT4B +20°C PVDF 100 to 230 V 15.2 (Consumption)W PVDF
RS Stock No. 121-8597
Mfr. Part No.DLTA0730PVT2000U11131EN0
BrandProMinent
£1,987.54
Each
Units
- Electric 29.2L/h - 7 bar 3/4 in G 3/4 in G IP65 DLTa +20°C PVDF 100 to 230 V 78 (Consumption)W PVDF
RS Stock No. 121-8603
Mfr. Part No.DF4A0W003060P0U120001210
BrandProMinent
£958.20
Each
Units
Peristaltic Electric 6L/h - 2.5 bar - - IP65 DF4a +20°C - 100 to 240 V 24 (Consumption)W -
RS Stock No. 121-8593
Mfr. Part No.GMXa0414PVT20000U11130EN
BrandProMinent
£1,222.04
Each
Units
- Electric 14L/h - 4 bar 3/4 in G 3/4 in G IP65 GMXa +20°C PVDF 100 to 230 V 24 / 30 (Consumption)W PVDF
RS Stock No. 121-8590
Mfr. Part No.BT4B0220PVT2000U1110000
BrandProMinent
£861.95
Each
Units
- Electric 19L/h - 2 bar 3/4 in G 3/4 in G IP65 BT4B +20°C PVDF 100 to 230 V 15.2 (Consumption)W PVDF
RS Stock No. 121-8592
Mfr. Part No.GMXa0708PVT20000U11130EN
BrandProMinent
£1,251.13
Each
Units
- Electric 7.6L/h - 7 bar 3/4 in G 3/4 in G IP65 GMXa +20°C PVDF 100 to 230 V 24 / 30 (Consumption)W PVDF
RS Stock No. 121-8596
Mfr. Part No.DLTA1020PVT2000U11131EN0
BrandProMinent
£2,016.76
Each
Units
- Electric 19.1L/h - 10 bar 3/4 in G 3/4 in G IP65 DLTa +20°C PVDF 100 to 230 V 78 (Consumption)W PVDF
RS Stock No. 179-7499
Mfr. Part No.1010797
BrandProMinent
£939.56
Each
Units
Diaphragm Air 650L/h - 7 bar - - - - - PVDF - - -
RS Stock No. 179-7496
Mfr. Part No.PNDB1601PVT2000001
BrandProMinent
£525.04
Each
Units
- Air 1L/h - 16 bar - - - - - PVDF - - -
RS Stock No. 180-9204
Mfr. Part No.S1CBH04120PVTS070UA110S0EN
BrandProMinent
£2,680.04
Each
Units
Diaphragm Electric 120L/h - 4 bar DN 15 1 in G IP55, IP65 S1Cb +100 °C @ 15 min (2 bar) PVDF 100 → 230 V ac - PVDF