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. 702-6888
BrandRS PRO
HK$825.73
Each
units
2000ml/min 12 V 3.2 mm Tube 3.5m 345 mbar Anodised Aluminium Direct 6W +100°C 3.2mm 3.2mm IP68
RS Stock No. 214-5206
Mfr. Part No.555039
HK$3,884.68
Each
units
160L/min 1 → 240 V - 7m - Stainless Steel - - +50°C - 1-1/4in -
RS Stock No. 122-6640
Mfr. Part No.BW5003-000A
BrandXylem
HK$1,718.20
Each
units
4.1L/min 230 V - - 40 psi - - - +57.2°C - 6.35mm -
RS Stock No. 817-0772
BrandRS PRO
HK$1,116.36
Each
units
- 6 → 24 V 8 mm Tube - - Aluminium Alloy Direct - +100°C 8mm 8mm IP67, IP68
RS Stock No. 702-6872
BrandRS PRO
HK$692.62
Each
units
2.8L/min 12 V 5 mm Tube 3.5m 324 mbar Aluminium - 6W +120°C 5mm 5mm IP52
RS Stock No. 144-9345
Mfr. Part No.173904
BrandXylem
HK$2,175.27
Each
units
- - - - - - Magnetic - - - - IP22
RS Stock No. 817-0706
BrandRS PRO
HK$899.98
Each
units
2685ml/min 12 V 6 mm Tube - 380 mbar Aluminium Alloy Direct 7.1W +100°C 6mm 6mm IP67
RS Stock No. 705-9315
Mfr. Part No.LVM131
BrandXylem LVM
HK$753.73
Each
units
18L/min 24 V 1/2 in Hose Barb 9m 1 bar POM - - +80°C 1/2in 1/2in -
RS Stock No. 817-0728
BrandRS PRO
HK$882.93
Each
units
-420 ml/min, 620 ml/min 6 V 2.4 mm Tube - -8 psi, 12 psi Anodised Aluminium Direct 0.7W +100°C 2.4mm 3mm IP41, IP67
RS Stock No. 667-9166
Mfr. Part No.107500000XAA
HK$4,419.97
Each
units
45L/min 240 V 1 in Rp 45.2m 8 bar Iron Direct 0.87kW +40°C 1in 1in IP55
RS Stock No. 125-3556
BrandRS PRO
HK$1,513.99
Each
units
3.8L/min - - - 1.5 bar Anodised Aluminium - - - - - IP68
RS Stock No. 763-2499
Mfr. Part No.50840-0012
HK$2,764.00
Each
units
- 12 V 3/4 in NPTF - - Stainless Steel Direct - - 3/4in 3/4in -
RS Stock No. 763-2522
Mfr. Part No.53041-2053-230
HK$6,866.86
Each
units
20L/min 230 V 1 in BSP 3m 1.6 bar Bronze, Stainless Steel Direct 0.25kW - 1in 1in IP54
RS Stock No. 331-8231
Mfr. Part No.N2081080E
HK$3,272.53
Each
units
80L/min 230 V - - - Stainless Steel - - +40⁰C - - IP68
RS Stock No. 817-0716
BrandRS PRO
HK$672.12
Each
units
-420 ml/min, 620 ml/min 6 V 2.4 mm Tube - -8 psi, 12 psi Anodised Aluminium Direct 0.7W +100°C 2.4mm 3mm IP41, IP67
RS Stock No. 806-555
Mfr. Part No.DRENOX 80/7 230V
HK$4,099.12
Each
units
80L/min 220 → 240 V - 7m - Stainless Steel - 0.2kW +50°C - 1.25in IP68
RS Stock No. 817-0693
BrandRS PRO
HK$569.60
Each
units
400ml/min 4.5 V 2.4 mm Tube - 155 mbar Aluminium Alloy Direct 1.85W +100°C 2.4mm 3mm IP67
RS Stock No. 763-2553
Mfr. Part No.Rule iL500P-24
BrandXylem
HK$619.89
Each
units
1920L/h 24 V - 9.7m 14 psi POM Direct - +80°C - 19mm -
RS Stock No. 125-3560
BrandRS PRO
HK$2,503.18
Each
units
500ml/min 6 → 24 V - - 8 bar Anodised Aluminium - 3 → 30W - - - IP68
RS Stock No. 914-6956
BrandRS PRO
HK$453.35
Each
units
661ml/min 4 V 3.2 mm Tube - 323 mbar Aluminium - 2W +100°C 3.2mm - IP45, IP67