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 Pump Type IP Rating
RS Stock No. 493-1863
Mfr. Part No.020-072 RS
HK$2,194.71
Each
units
130L/min 230 V - 6m - - - 200W - - 1-1/4in - -
RS Stock No. 125-3586
BrandRS PRO
HK$1,832.05
Each
units
400ml/min 6 → 24 V - - 10 bar Anodised Aluminium - 3 → 30W - - - - IP68
RS Stock No. 817-0712
BrandRS PRO
HK$642.50
Each
units
-380 ml/min, 450 ml/min 6 V 2.4 mm Tube - -8 psi, 10 psi Glass Filled Nylon Direct 0.7W +100°C 2.4mm 3mm - IP41, IP67
RS Stock No. 144-9344
Mfr. Part No.173903
BrandXylem
HK$2,266.31
Each
units
23L/min - 1/2 in BSP 3.8m - Thermoplastic Magnetic 0.018kW - - - - IP22
RS Stock No. 125-3593
BrandRS PRO
HK$1,110.56
Each
units
3.6L/min 3 → 6 V - - 0.7 mbar ABS, PC - 0.3 → 2.1W - - - - IP41
RS Stock No. 480-128
BrandRS PRO
HK$530.32
Each
units
380ml/min 6 V 3.2 mm Tube 0.55m 90 mbar Anodised Aluminium Direct 0.45W +120°C 3.2mm 3.2mm - IP64
RS Stock No. 125-3579
BrandRS PRO
HK$840.91
Each
units
2685ml/min 12 V - - 380 mbar Anodised Aluminium - 7.1W - - - - IP45
RS Stock No. 763-2531
Mfr. Part No.Rule iL500PK
BrandXylem
HK$811.57
Each
units
1920L/h 12 V - 9.7m 14 psi POM Direct - +80°C - 19mm - -
RS Stock No. 125-3557
BrandRS PRO
HK$1,734.47
Each
units
3.8L/min - - - 1.5 bar Anodised Aluminium - - - - - - IP68
RS Stock No. 806-555
Mfr. Part No.DRENOX 80/7 230V
HK$4,268.63
Each
units
80L/min 220 → 240 V - 7m - Stainless Steel - 0.2kW +50°C - 1.25in - IP68
RS Stock No. 125-3555
BrandRS PRO
HK$1,734.47
Each
units
3.8L/min 6 V - - 1.5 bar Anodised Aluminium - 4.2W - - - - IP68
RS Stock No. 178-2440
Mfr. Part No.06869
BrandSIP
HK$1,100.01
Each
units
242L/min 230 V - 11m - Stainless Steel - 1000W +35°C - 25.4mm - IPX8
RS Stock No. 817-0706
BrandRS PRO
HK$1,035.94
Each
units
2685ml/min 12 V 6 mm Tube - 380 mbar Aluminium Alloy Direct 7.1W +100°C 6mm 6mm - IP67
RS Stock No. 817-0700
BrandRS PRO
HK$1,035.94
Each
units
1150ml/min 12 V 3.2 mm Tube - 380 mbar Aluminium Alloy Direct 5.8W +100°C 3.2mm 4mm - IP67