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pumps

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. D

    new smart pumps

    ?...........
  2. F

    Grundfos twin head circulating pumps for sale (buy it now) on ebay

    Grundfos UPSD 32 - 80 (180) Twin head circulating pumps. Part number: 95906455 | eBay
  3. N

    Danfoss solenoid coil

    Noticed there are 3 pins on the connector plug. Attended a break down today which I don't normally do for oil and wondered if they are all used, if so what are they? Live neutral and . . . the breakdown was no oil to nozzle, used solenoid tester and not energising, photocell seems good, get...
  4. R

    Flow

    Went to service this boiler today, Just firing it up to test, to find it wouldn't fire for more than a couple of minutes, then was cycling every 30 seconds or so. Customer keeps heating and hot water on 24-7 so wasn't aware of a problem as system did eventually get up to temp. See a problem ;)
  5. L

    riello 2.2 on firebird ecomax combi womt fire

    called to do a service on this nightmare on friday, so left it till today as custard denied it needed repairing! arrived and it fired ok. cleaned it all out (4 years old and no service records seen) and judging by the burnt through baffle and sooted up interior not serviced yet!! changed...
  6. N

    shower pumps

    Can anyone recommend a good shower pump manufacturer as we have used s/turner for years but we have had a leak from one and they are not willing to change it so time to move on.
  7. E

    new grudfoss a rated pumps

    Daft question on the old grundfoss 15-50 pumps we could just change the head, does anyone know if we can put the head of the new a rated pump head on the old pump or do we have to change evenry thing?
  8. C

    Hi...I'm new and after some advice on Dream air source heat pumps!

    Hi, My name's Carl and I'm a builder. I'm currently renovating our family home and I'm interested in fitting an air source heat pump. I've got a plumber and electrician who can install it but I'm trying to get some information on Dream air source heat pumps as these are the only pumps I can find...
  9. B

    L F P Circulating Pumps any good?

    Hey guys. Been reading the threads and I believe you may be able to help me. It's a quick enquiry. L F P is a Polish pump manufacturer and I was wondering has anybody used their circulating pump? As we all know Grundfos charge an arm and a leg even on the 25/4and these guys are significantly...
  10. L

    house water pressure problem +water pumps

    hello Everybody i'm new here and this is my first post. 3 weeks ago we fit in our home 2 bar positive head Monsoon standard twin flow pump and work fine .but my only consider is when the pumps switch off we have not much pressures as before.(before we fit the pumps ) any idea ??? Please...
  11. J

    Issue with seperate hot and cold water pumps...

    Hi, I'm dealing with a slightly complicated scenario. Essentially, my parents and I will be living in the same building; I'll have an apartment and they'll have the penthouse above me. For cost saving reasons and to save on roof space, our intention was to have a shared Solar Water Heater (SWH)...
  12. R

    PZP heat pump breakdown

    In 2009 I had a PZP heat pump installed by eco hometec (UK) ltd. The company has ceased trading. I need the name and address of a company or a plumber/heating engineer with ability to service and repair my PZP heat pump I am based in Wiltshire Thanks Robin
  13. D

    Ground source heat Pumps

    went today to repair some steel heating pipes in a massive old building. pipes are as rotten as a pear. Customer informed me that they are having the existing heating and rad pipework (which by the way is a one pipe system) linked up to a ground source heat pump. My understanding is that the...
  14. S

    condensate pumps

    allright guys what condensate pumps do you use, i have been using plumb centres jet brand but not done many of these
  15. M

    Shower pumps. I have seen the thread!!

    Now, I am wanting a single impellor 2bar shower pump to pump the hot water side and the the cold will be on the mains with a pressure balancing shower valve. Now, the pump will be in the loft and the pipes will have to go down to cylinder and back upto the loft. But, the shower rose is below...
  16. D

    Problem with a water pump...

    Hi guys, The cold water storage tank in my flat is at a very low level, so there was a pump fitted when it was built to up the pressure on both the hot and cold supplies. Had a bit of trouble with it recently as the pump stopped kicking in when the taps were turned on (unless I give it a bit...
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