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pump problems

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power, and come in many sizes, from microscopic for use in medical applications, to large industrial pumps.
Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis.
When a casing contains only one revolving impeller, it is called a single-stage pump. When a casing contains two or more revolving impellers, it is called a double- or multi-stage pump.
In biology, many different types of chemical and biomechanical pumps have evolved; biomimicry is sometimes used in developing new types of mechanical pumps.

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  1. iCannon

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    Hi I have a Potterton Heatmax Combi 28 HE that was installed in 2014. Over the past year or so it has slowly had more trouble heating distant radiators. It was serviced in February 2022 and given a clean bill of health, however since then it now only heats the two nearest radiators and at a...
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  5. N

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  6. F

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  7. J

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  9. G

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  10. R

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  11. R

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  12. J

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  13. D

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  14. R

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    Hi. 3 out of 4 upstairs radiators are stone cold I will try to give as much information as I can. Boiler is a Glowworm Micron on a S plan. Both zone valves were replaced last weekend as they were leaking through the valve body but this was a existing problem. All the radiators that are not...
  15. N

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    I have a DAB circulating pump attached to horizontal pipes in my basement. It is located about 3 feet below the boiler, and on the floor underneath it are 2 old Grundfos pumps. From this I deduce that the previous owners have had pump problems in the past. The reason I had to check it out is the...
  16. A

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  17. E

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    Hi, I am hoping someone can help me. I have a waterpump donwstairs for the en-suite bathroom and it kicks in everytime I turn on the tab, shower or flush the toilet. However, sometimes it does not kick in at all, and i end up waiting for hours and keep trying before i can have pressure...
  18. I

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  19. T

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  20. M

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