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. 121-8595
Mfr. Part No.DLTA1612PVT2000U11131EN0
BrandProMinent
MYR13,275.83
Each
units
- Electric 11.3L/h - 16 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. 185-6154
Mfr. Part No.169.6020
BrandVerderflex
MYR453.49
Each
units
- - - - - - - - - - - - - -
RS Stock No. 705-9330
Mfr. Part No.RLFP222202D
MYR528.09
Each
units
Diaphragm Electric 3.8L/min 25m 2.4 bar 3/8 in Hose Barb 3/8 in Hose Barb - RLF222 +43°C PP 24 V dc 30W -
RS Stock No. 125-4041
Mfr. Part No.AU R1580240 05
BrandVerderflex
MYR2,535.45
Each
units
Peristaltic Electric 2200ml/min - - - - - M1500 - ABS 24 V dc 30W -
RS Stock No. 195-3559
Mfr. Part No.GXLAEU1612PVT20000U11130EN
BrandProMinent
MYR13,557.78
Each
units
- - 12L/h 16m 16 bar - - - GXLa - PVDF 230 V 78W PVDF
RS Stock No. 146-6434
Mfr. Part No.R4300342A
MYR1,195.98
Each
units
Diaphragm Automatically Operated 3.7 g/min, 14 L/min - 3.1 bar 1/2 in Hose Barb 1/2 in Hose Barb - QUAD 4000 +54°C PP 24 V dc - Elastomer, Polypropylene (Housing)
RS Stock No. 185-6144
Mfr. Part No.164.0031
BrandVerderflex
MYR863.00
Each
units
- - 375ml/min 86mm 1 bar - - - - - Nylon, Polycarbonate 24 V dc - -
RS Stock No. 195-3556
Mfr. Part No.S1CBH12035PVTS070U111000EN
BrandProMinent
MYR16,996.86
Each
units
Diaphragm - 42L/h 10m 10 bar - - IP65 S1cb - PVDF 100 → 230 V 220W PVDF
RS Stock No. 185-6125
Mfr. Part No.164.0128
BrandVerderflex
MYR872.06
Each
units
- - - - - - - - - - - - - -
RS Stock No. 196-1155
Mfr. Part No.PA3110-F03
BrandSMC
MYR4,079.72
Each
units
- Automatically Operated 200L/min - 0.7 MPa - - - PA3000 +60°C - - - ADC12 (Aluminium)
RS Stock No. 705-9324
Mfr. Part No.RLFP122201D
MYR562.17
Each
units
Diaphragm Electric 3.8L/min 21m 2.5 bar 3/8 in Hose Barb 3/8 in Hose Barb - RLF122 +43°C PP 12 V dc 30W EPDM, PP, Santoprene, Stainless Steel, Viton
RS Stock No. 195-3561
Mfr. Part No.GXLAEU0730PVT20000U11130EN
BrandProMinent
MYR13,557.78
Each
units
- - 30L/h 7m 7 bar - - - GXLa - PVDF 230 V 78W PVDF
RS Stock No. 185-6151
Mfr. Part No.169.6015
BrandVerderflex
MYR453.49
Each
units
- - - - - - - - - - - - - -
RS Stock No. 195-3560
Mfr. Part No.GXLAEU1020PVT20000U11130EN
BrandProMinent
MYR13,557.78
Each
units
- - 20L/h 10m 10 bar - - - GXLa - PVDF 230 V 78W PVDF
RS Stock No. 185-6117
Mfr. Part No.162.1143
BrandVerderflex
MYR1,760.49
Each
units
- - - - - - - - - - - - - -
RS Stock No. 121-8593
Mfr. Part No.GMXa0414PVT20000U11130EN
BrandProMinent
MYR7,991.55
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. 446-3483
Mfr. Part No.416989
MYR1,848.47
Each
units
Diaphragm Electric 3L/min 89m 20 bar - - IP44 AD4/90 +77°C - 230 V 55W -
RS Stock No. 185-6142
Mfr. Part No.164.0029
BrandVerderflex
MYR872.06
Each
units
- - 375ml/min 86mm 1 bar - - - - - Nylon, Polycarbonate 24 V dc - -
RS Stock No. 125-4044
Mfr. Part No.AU M310125 02
BrandVerderflex
MYR3,694.38
Each
units
Peristaltic Electric 1800ml/min - - - - - R3DC - Aluminium 24 V 100W -
RS Stock No. 185-6116
Mfr. Part No.162.1138
BrandVerderflex
MYR1,760.49
Each
units
- - - - - - - - - - - - - -
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