Water Pumps

Water, by nature always moves from an area of high pressure to an area of low pressure. A water pump is a mechanical device that can circulate water or raise it from one level to another.
How does a water pump work?
Water pumps draw existing water in to the pump by suction through an inlet point. The inlet point has a lower rate of pressure than the outlet point. A water pump is designed to increase the rate that the water is flowing to create a vacuum. At this point, the outlet point has a high-pressure level which forces out the water.
Water pumps come in various forms, selecting the best one for the application depends on several factors. Things to consider are;
Water quality - Is the water clean, dirty or foul? Does the water contain any semi-solid or solid matter?
Amount of water – What is the amount of water to be moved or drained? This is essential as pumps have a maximum flow rate usually in litres per minute.
Inlet and outlet points - Does the pump selected require solid pipework or hose for the inlet and outlet points. What is the size of the pipework or hose? Are they threaded connections or are do they accept a tube with an O/D in mm?
Mechanical seals - Are the seals within the pump suitable for the job?
Types of water pump
• Centrifugal water pumps are ideal for pumping higher flow rates
• Dirty water pumps are ideal for pumping dirty or foul water
• Submersible water pumps are ideal for pumping flooded areas, submersible pumps usually have the option of a float switch
• Petrol water pumps are ideal for draining out ditches and trenches
Applications
Water pumps are used in various applications across a wide range of industries. Some of the most common are;
• Waste water processing plants, irrigation and drainage
• Food and beverage production
• Oil and energy, power plants and refineries
• Heating, ventilation and air conditioning
• Water feature and ponds
• Aquarium and fish tanks

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Description Price Maximum Flow Rate Supply Voltage Input Connection Maximum Head Maximum Working Pressure Body Material Coupling Type Input Power Maximum Fluid Temperature Input Connection Size Output Connection Size IP Rating
RS Stock No. 702-6882
BrandRS PRO
HK$791.12
Each
units
2.8L/min 12 V 5 mm Tube 3.5m 323 mbar Aluminium - 6W +120°C 5mm 5mm IP52
RS Stock No. 702-6876
BrandRS PRO
HK$706.16
Each
units
2L/min 12 V 3.2 mm Tube 3.5m 345 mbar Anodised Aluminium Direct 6W +100°C 3.2mm 3.2mm IP52
RS Stock No. 214-5212
Mfr. Part No.555045
HK$5,551.96
Each
units
200L/min 230 V - 8m - Stainless Steel Direct - +50°C - 1-1/4in -
RS Stock No. 214-5199
Mfr. Part No.555057
HK$7,272.57
Each
units
400L/min 230 V - 12m - Stainless Steel - 1.6kW - - 2in -
RS Stock No. 707-3620
Mfr. Part No.SP 3
BrandKarcher
HK$1,038.08
Each
units
7000L/h 230 → 240 V - 6m 0.6 bar - - - +35°C - 1in -
RS Stock No. 696-8735
BrandConvac
HK$91,016.03
Each
units
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RS Stock No. 702-6891
BrandRS PRO
HK$706.16
Each
units
2L/h 12 V 3.2 mm Tube 3.5m 329 mbar Aluminium - 6W +120°C 3.2mm 3.2mm IP52
RS Stock No. 446-3461
Mfr. Part No.073983
HK$2,059.34
Each
units
23L/min 12 V 1/4 in BSP 6.5m 1.4 bar PP Magnetic 54W +85°C 1/4in 1/4in -
RS Stock No. 445-986
Mfr. Part No.456949
HK$2,744.84
Each
units
47L/min 230 V 1/2 in G 6m - PP Magnetic 95W +80°C 1/2in 1/2in IPX5
RS Stock No. 696-8738
BrandConvac
HK$955,668.45
Each
units
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RS Stock No. 214-5486
Mfr. Part No.555033
HK$3,479.13
Each
units
80L/min 220 V - 5m - Stainless Steel Direct 0.2kW +50°C - 1-1/4in -
RS Stock No. 667-9075
Mfr. Part No.446930
HK$4,147.28
Each
units
80L/min 230 V 3/4 in BSP 5.5m 1.4 bar - Magnetic 96W +85°C 3/4in 3/4in IPX5
RS Stock No. 705-9428
Mfr. Part No.609800001
HK$2,731.94
Each
units
460L/h 100 → 240 V ac 14 mm Hose Barb 5.4m - ABS Magnetic 25W +60°C 14mm 14mm IP44
RS Stock No. 445-992
Mfr. Part No.018938
HK$11,838.07
Each
units
160L/min 230 V 1-1/4 in G 8.8m - PP Magnetic 400W +80°C 1-1/4in 3/4in IP55
RS Stock No. 667-9157
Mfr. Part No.800M
HK$2,125.79
Each
units
50L/min 240 V 1 in G - 6 bar Iron Direct 1.03kW +50°C 1in 1in IP44
RS Stock No. 763-2516
Mfr. Part No.107330030XAA
HK$7,016.73
Each
units
150L/min 230 V 1-1/4 in Rp 22m 8 bar Stainless Steel Direct 0.91kW +110°C 1-1/4in 1in IP55
RS Stock No. 817-0766
BrandRS PRO
HK$2,494.63
Each
units
1.75L/min 6 → 24 V 6 mm Tube - 15 bar Aluminium Alloy Direct 15 → 99W +100°C 6mm - IP67, IP68
RS Stock No. 667-9150
Mfr. Part No.1000M
HK$2,489.17
Each
units
0.65L/min 240 V 1 in G - 6 bar Iron Direct 1.15kW +50°C 1in 1in IP44
RS Stock No. 667-9078
Mfr. Part No.083942
HK$2,434.56
Each
units
35L/min 12 V 1/2 in BSP 5m 1.4 bar PP Magnetic 60W +85°C 21mm 21mm -
RS Stock No. 696-8729
BrandConvac
HK$12,655.34
Each
units
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