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庫存編號 702-6882
BrandRS PRO
HK$634.49
單位
2.8L/min 12 V 5 mm Tube - 3.5m 323 mbar RS Aluminium - 6W +120°C 5mm 5mm Body, Connector, Impeller, Seal
RS庫存編號 702-6876
BrandRS PRO
HK$715.41
單位
2L/min 12 V 3.2 mm Tube - 3.5m 345 mbar RS Anodised Aluminium Direct 6W +100°C 3.2mm 3.2mm Body, Connector, Impeller, Seal
RS庫存編號 214-5212
製造零件編號555045
HK$3,622.98
單位
200L/min 230 V - 1-1/4 in BSP 8m - - Stainless Steel Direct - +50°C - 1-1/4in -
RS庫存編號 707-3620
製造零件編號SP 3
BrandKarcher
HK$740.95
單位
7000L/h 230 → 240 V - 1 in G 6m 0.6 bar SP 3 - - - +35°C - 1in -
RS庫存編號 214-5199
製造零件編號555057
HK$7,192.20
單位
400L/min 230 V - - 12m - - Stainless Steel - 1.6kW - - 2in -
RS庫存編號 702-6891
BrandRS PRO
HK$634.49
單位
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庫存編號 696-8735
BrandConvac
HK$91,016.03
單位
- - - - - - - - - - - - - -
RS庫存編號 696-8738
BrandConvac
HK$955,668.45
單位
- - - - - - - - - - - - - -
RS庫存編號 446-3461
製造零件編號073983
HK$1,555.99
單位
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庫存編號 445-986
製造零件編號456949
HK$3,110.58
單位
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庫存編號 667-9075
製造零件編號446930
HK$3,530.86
單位
80L/min 230 V 3/4 in BSP 3/4 in BSP 5.5m 1.4 bar NEMP - Magnetic 96W +85°C 3/4in 3/4in -
RS庫存編號 667-9078
製造零件編號083942
HK$1,779.78
單位
35L/min 12 V 1/2 in BSP 1/2 in BSP 5m 1.4 bar DC PP Magnetic 60W +85°C 21mm 21mm PP (Housing), Stainless Steel (Spindle), Standard EPDM (O-Ring), Strontium Ferrite (Magnet)
RS庫存編號 817-0784
BrandRS PRO
HK$1,003.07
單位
- 6 → 24 V 8 mm Tube 8 mm Barb - - - Aluminium Alloy Direct - +100°C 8mm 8mm Anodised Aluminium (Housing), Polyacetal (Impeller), Stainless Steel (Tubing Connector), Viton (Seals)
RS庫存編號 817-0766
BrandRS PRO
HK$2,241.46
單位
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庫存編號 667-9157
製造零件編號800M
HK$1,984.43
單位
50L/min 240 V 1 in G 1 in G - 6 bar JET Iron Direct 1.03kW +50°C 1in 1in -
RS庫存編號 667-9150
製造零件編號1000M
HK$2,326.62
單位
0.65L/min 240 V 1 in G 1 in G - 6 bar JET Iron Direct 1.15kW +50°C 1in 1in -
RS庫存編號 914-6944
BrandRS PRO
HK$407.33
單位
398ml/min 4 V 2.4 mm Tube - - 399 mbar - Aluminium - 1.8W +100°C 2.4mm - Anodised Aluminium, EPDM, Polyacetal, Stainless Steel
RS庫存編號 705-9311
製造零件編號LVM130
BrandXylem LVM
HK$530.00
單位
18L/min 12 V 1/2 in Hose Barb 1/2 in Hose Barb 9m 1 bar LVM130 POM - - +80°C 1/2in 1/2in -
RS庫存編號 763-2516
製造零件編號107330030XAA
HK$6,289.80
單位
150L/min 230 V 1-1/4 in Rp 1 in Rp 22m 8 bar - Stainless Steel Direct 0.91kW +110°C 1-1/4in 1in Stainless Steel
RS庫存編號 446-3449
製造零件編號073982
HK$2,119.71
單位
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 -