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 Output Connection Maximum Head Maximum Working Pressure Series Body Material Coupling Type Input Power Maximum Fluid Temperature Input Connection Size Output Connection Size Wetted Materials
RS Stock No. 702-6882
BrandRS PRO
HK$662.15
Each
units
2.8L/min 12 V 5 mm Tube - 3.5m 323 mbar - Aluminium - 6W +120°C 5mm 5mm -
RS Stock No. 702-6876
BrandRS PRO
HK$715.41
Each
units
2L/min 12 V 3.2 mm Tube - 3.5m 345 mbar - Anodised Aluminium Direct 6W +100°C 3.2mm 3.2mm -
RS Stock No. 214-5212
Mfr. Part No.555045
HK$2,425.05
Each
units
200L/min 230 V - 1-1/4 in BSP 8m - - Stainless Steel Direct - +50°C - 1-1/4in -
RS Stock No. 707-3620
Mfr. Part No.SP 3
BrandKarcher
HKD709.91
Each
units
7000L/h 230 → 240 V - 1 in G 6m 0.6 bar SP 3 - - - +35°C - 1in -
RS Stock No. 214-5199
Mfr. Part No.555057
HK$7,192.20
Each
units
400L/min 230 V - - 12m - - Stainless Steel - 1.6kW - - 2in -
RS Stock No. 696-8735
BrandConvac
HK$91,016.03
Each
units
- - - - - - - - - - - - - -
RS Stock No. 702-6891
BrandRS PRO
HK$634.49
Each
units
2L/h 12 V 3.2 mm Tube - 3.5m 329 mbar RS Aluminium - 6W +120°C 3.2mm 3.2mm Body, Connector, Impeller, Seal
RS Stock No. 445-986
Mfr. Part No.456949
HK$3,110.58
Each
units
47L/min 230 V 1/2 in G 1/2 in G 6m - - PP Magnetic 95W +80°C 1/2in 1/2in Alumina (Spindle), PP (Encapsulated Magnet), PP (Housing), PPS (Spindle Housing), Standard EPDM (O-Ring)
RS Stock No. 696-8738
BrandConvac
HK$955,668.45
Each
units
- - - - - - - - - - - - - -
RS Stock No. 446-3461
Mfr. Part No.073983
HK$1,786.68
Each
units
23L/min 12 V 1/4 in BSP 1/4 in BSP 6.5m 1.4 bar DC PP Magnetic 54W +85°C 1/4in 1/4in PP (Housing), Stainless Steel (Spindle), Standard EPDM (O-Ring), Strontium Ferrite (Magnet)
RS Stock No. 480-188
BrandRS PRO
HK$387.19
Each
units
350ml/min 4 V 2.4 mm Tube - 1.1m 90 mbar - Anodised Aluminium Direct 1.56W +120°C 2.4mm 2.4mm -
RS Stock No. 266-597
Mfr. Part No.143904
HK$1,618.00
Each
units
35L/min 230 V - - 2.3m 1.4 bar - PP Magnetic 84W +85°C 22mm 22mm Alumina (Spindle), PP (Encapsulated Magnet), PP (Housing), Standard EPDM (O-Ring)
RS Stock No. 817-0766
BrandRS PRO
HK$2,241.46
Each
units
1.75L/min 6 → 24 V 6 mm Tube - - 15 bar - Aluminium Alloy Direct 15 → 99W +100°C 6mm - Anodised Aluminium (Housing), PEEK (Gear), Polyacetal (Volute), Stainless Steel (Tubing Connector), Viton (Seal)
RS Stock No. 696-8729
BrandConvac
HK$12,655.34
Each
units
- - - - - - - - - - - - - -
RS Stock No. 667-9150
Mfr. Part No.1000M
HK$2,326.62
Each
units
0.65L/min 240 V 1 in G 1 in G - 6 bar JET Iron Direct 1.15kW +50°C 1in 1in -
RS Stock No. 480-122
BrandRS PRO
HK$436.58
Each
units
650ml/min 3 → 4 V 3.2 mm Tube - 1.9m 327 mbar - Aluminium - 0.84 → 1.6W +120°C 3.2mm 3.2mm -
RS Stock No. 914-6944
BrandRS PRO
HK$407.33
Each
units
398ml/min 4 V 2.4 mm Tube - - 399 mbar - Aluminium - 1.8W +100°C 2.4mm - Anodised Aluminium, EPDM, Polyacetal, Stainless Steel
RS Stock No. 763-2540
Mfr. Part No.Rule iL280P
BrandXylem
HK$410.00
Each
units
1080L/h 12 V - 13 mm Hose 9.7m 14 psi - POM Direct - +80°C - 13mm POM
RS Stock No. 445-992
Mfr. Part No.018938
HK$10,040.71
Each
units
160L/min 230 V 1-1/4 in G 3/4 in G 8.8m - - PP Magnetic 400W +80°C 1-1/4in 3/4in Alumina (Spindle & Thrust Washer), PP (Encapsulated Magnet & Housing), PPS (Spindle Housing), Standard EPDM (O-Ring)
RS Stock No. 446-3449
Mfr. Part No.073982
HK$48.33
Each
units
5.5L/min 230 V 1/2 in Push Fit 1/2 in Push Fit 7.4m 10 bar HPR - Magnetic - +85°C 1/2 1/2in -
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