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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Omschrijving Prijs 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-stocknr. 702-6894
FabrikantRS PRO
56,33 €
Each
Aantal stuks
Diaphragm Electric 150ml/min - 1 bar - - IP50 D200 +100°C Nylon 1.5 → 4.5 V 0.48W Nitrile, Nylon, Silicone
RS-stocknr. 702-6898
FabrikantRS PRO
74,61 €
Each
Aantal stuks
Diaphragm Electric 380ml/min - 11 psi - - IP50 D250 +100°C Aluminium 1.5 → 5 V 0.48W Anodized Aluminium, Nitrile, Silicone, Stainless Steel
RS-stocknr. 667-9097
FabrikantnummerR4300242A
FabrikantXylem Flojet
350,02 €
Each
Aantal stuks
Diaphragm Electric 12L/min 40m 2.1 bar 1/2 in Hose Barb 1/2 in Hose Barb IP44 R4300 +54°C Glass Fibre Reinforced PP 230 V ac - -
RS-stocknr. 705-9355
FabrikantnummerR3521139A
FabrikantXylem Flojet
230,51 €
Each
Aantal stuks
Diaphragm Electric 15.1L/min 41m 4.1 bar 1/2 in Hose Barb 1/2 in Hose Barb IP54 R352 +60°C PP 12 V 108W -
RS-stocknr. 705-9383
Fabrikantnummer53041-2003-230
FabrikantXylem Jabsco
824,94 €
Each
Aantal stuks
Impeller Electric 35L/min 16m - 1 in BSP 1 in BSP IP54 - - Bronze 230 V 300W -
RS-stocknr. 121-8586
FabrikantnummerBT4B1601PVT2000U1110000
FabrikantProMinent
1.120,98 €
Each
Aantal stuks
- 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-stocknr. 705-9393
Fabrikantnummer53081-2003-230
FabrikantXylem Jabsco
953,82 €
Each
Aantal stuks
Centrifugal Electric 80L/min 20m - 1-1/2 in BSP 1-1/2 in BSP IP55 - - Bronze 230 V ac 550W -
RS-stocknr. 705-9327
FabrikantnummerRLF222201D
FabrikantXylem Flojet
111,51 €
Each
Aantal stuks
Diaphragm Electric 3.8L/min 21m 2.5 bar 3/8 in Hose Barb 3/8 in Hose Barb - RLF222 +43°C PP 24 V dc 30W -
RS-stocknr. 493-1920
Fabrikantnummer7043 RS
233,95 €
Each
Aantal stuks
Drum Electric 40L/min 12m - - 3/4 in Plain - - - - 12 V dc - -
RS-stocknr. 705-9321
FabrikantnummerRLFP122202D
FabrikantXylem Flojet
105,27 €
Each
Aantal stuks
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-stocknr. 705-6684
FabrikantnummerAU R2550030 RS1
FabrikantVerderflex
189,99 €
Each
Aantal stuks
Peristaltic Electric 0.06L/min 10m 1 bar - - - R2550 +40°C ABS, PC 12 V dc 6W -
RS-stocknr. 144-844
FabrikantnummerBL 5/D
192,69 €
Each
Aantal stuks
Diaphragm Electric 5L/h - 101.5 psi - - IP65 BL5/D - Glass Fibre Reinforced PP 220 V, 240 V 200W -
RS-stocknr. 121-8598
FabrikantnummerDF2A0208P00A10W1
FabrikantProMinent
373,66 €
Each
Aantal stuks
Peristaltic Electric 0.8L/h - 1.5 bar - - IP65 DF2a +20°C - 230 V 5 (Consumption)W -
RS-stocknr. 705-6678
FabrikantnummerAU EV EZ
FabrikantVerderflex
1.261,38 €
Each
Aantal stuks
Peristaltic Electric 0.6L/min 20m 1 bar - - IP40 EV-EZ +40°C Polyamide 100 → 120 V, 220 → 240 V 100VA -
RS-stocknr. 705-6671
FabrikantnummerAU R2550120 RS1
FabrikantVerderflex
189,99 €
Each
Aantal stuks
Peristaltic Electric 0.24L/min 10m 1 bar - - - R2550 +40°C ABS, PC 12 V dc 6VA -
RS-stocknr. 121-8587
FabrikantnummerBT4B1604PVT2000U1110000
FabrikantProMinent
1.120,98 €
Each
Aantal stuks
- 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-stocknr. 705-9333
FabrikantnummerR3711132A
FabrikantXylem Flojet
159,74 €
Each
Aantal stuks
Diaphragm Electric 5.5L/min 69m 6.9 bar 3/8 in BSP 3/8 in BSP - R371 +60°C Glass Fibre Reinforced Nylon 12 V dc 108W -
RS-stocknr. 705-6659
FabrikantnummerAU ES3R16
FabrikantVerderflex
134,52 €
Each
Aantal stuks
Peristaltic Electric - 20m 1 bar - - - ES3R1 +40°C Polyamide - 20W -
RS-stocknr. 667-9100
FabrikantnummerD3131H5011AR
FabrikantXylem Flojet
177,14 €
Each
Aantal stuks
Diaphragm Electric 5.3L/min 30m 4.2 bar 3/8 in NPT 3/8 in NPT IP44 D3131 +54°C Glass Filled PP 12 V dc - -
RS-stocknr. 705-6656
FabrikantnummerAU EZ3R16
FabrikantVerderflex
134,52 €
Each
Aantal stuks
Peristaltic Electric - 20m 1 bar - - - EZ3R1 +40°C Polyamide - 20W -
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