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pump

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. T

    Shower Pump on air to water Unvented Cylinder?

    Hi, I'm in my new build 2 years and the shower pump has died. I have an air to water unit downstairs is in the utility which I've been told is unvented and pressurised. The cold water feed into this cylinder is from the attic tank, not the mains as I turned off the mains stopcock to see if hot...
  2. MrGatch

    UFH Pump Question - Do I need it?

    We have a three zone heating system plus water cylinder (OSO Super S 250L) on an Valliant EcoTec 637. Two CH zones and a UFH zone. Boiler is rarely at maximum power rating, even at full tilt. The UFH zone has it's own pump and the other two zones (three storey house) are just pumped from the...
  3. R

    Noisy pump

    Hot water pump is very noisy. Is it on its way out, does it need replacing, or is it a case of getting used to the noise? Friend of mine bought a house and says a lot of noise when pump is running. See video attached.
  4. A

    URGENT Should a plumber inform you that your new Combi boiler would be no good with a digital pump.

    Hi. I recently had a renovation done. My builder installed a new Combi boiler instead of my system boiler. He connected the pipework to the digital pump. He did not inform us that we would need a new processor because we had changed to a Combi and subsequently a valve blew. Should my builders...
  5. N

    Heat pump and micro bore pipes

    Hi thank you for letting me join this forum . We have an air to water heat pump but the bungalow is piped in micro bore 10mm pipe which doesn’t look well piped , kinky in pipes in some places ,some of the rad don’t heat up too well , probably because of the badly piped system, the pipe is all...
  6. E

    Refurbished Stuart Turner shower pump question

    Are specialist refurbished Stuart Turner pumps reliable, or is it a bit of a gamble. Would it be best to buy new and pay twice as much.
  7. M

    Wood burning to heat pump

    My central heating is run off a heat pump ( air to water ) quite expensive to run , So I’m plainning to fit a wood burning with a back boiler to connect to the heating system, So while the wood burning on during winter months it will stop the heat pump for working hard Or not all all . My...
  8. J

    Pump problems

    Hi there, I’m hoping someone can help me with this problem please. I’ve searched for similar posts but not found anything helpful! My mum’s house has a pump which pulses on and off every time a tap is opened. Even filling the bath (pressure is strong) the pump won’t come on and stay on but...
  9. C

    Grundfos Alpha Pump replacement

    Hello, my Mothers heating failed in the recent UK cold snap. I found the pump was stuck. I have a question about pump orientation. The existing pump flows downwards. The manual for the proposed replacement recommends that it should pump upwards. This would involve rearranging the flow &...
  10. D

    Setting up Grandfos Pump

    I had a new Grandfos UPS3 pump fitted today, and am trying to set it up. I want it on 2nd setting, but having problems. The green light is on setting 1 and there is a yellow light on setting 2. If I press the arrow the green light stays on 1 and I then have yellow lights on settings 2 and 3. If...
  11. Drak911

    Alpha 2 15-60-130 pump

    Hi we have a Alpha 2 15-60-130 central heating pump fitted. We need a bit more heat from 12 rads. I’m confused about the settings as the Auto Adapt was pulling 14w which is not enough. I have now set the right side led to position 4 and it pulls 25w. Does anyone know what the pump should run at...
  12. magnumpl

    Macerator pump for a toilet & sink using existing shower pipe

    Hello. I am planning to build a small half bath in my garage, next to a washing machine, using old showers plumbing. There was a stand-alone shower in the garage which has been removed. Unfortunately the pipes are only 1.5" on that side of the house since there's no bathroom and the house is...
  13. W

    Replacement Collector Circuit Pump

    Hi, I’m looking to find a replacement Collector circuit pump for a ground source heat pump. This is the pump on the brine circuit. The pump I have is no longer supported by the manufacture. It’s a Wilo TOP-S25/7.5 Any recommendations would be very welcome.
  14. L

    Why is the pump running 24x7

    My son has just had a new boiler fitted and hes noticed that the pump runs 24x7 even when both the heating and hot water are set to off. He’s also found that when the hot water is set to off on the programe timer, the boiler is still heating up water. I wonder if this is because the engineer...
  15. Jagobezzer

    HETAS - Without a pressure pump

    Hi all, Just a quick question. I have a log burner and a gas boiler on a dual fuel system (Central heating and Hot Water) either can do both. The hot water tank I believe is a closed system but is on the same level as the bath. Therefore as you might guess the water pressure at the bath even on...
  16. Z

    Vaillant System Boiler With Additional Pump

    Hi, i've got a job with a Vaillant Ecotec 630 system boiler, and i don't know the full history but the house has definitely been extended significantly since the boiler was installed. There's now 21 radiators/towel rails. It's getting to temperature, but even after balancing, it's not heating...
  17. G

    New UPS3 pump too powerful ?

    Hi, I have just had my central heating system "upgraded" for a four bed-roomed detached house. The heating company recommended going from the open vented system to sealed / pressurized system, new pump ( UPS3 Grundfos ) all new plastic pipework ( extending ) the 22mm feed and return pipes so no...
  18. A

    Salamander pump not working unless shower head is taken down

    Hey, here goes and I hope it works.. never used one of these before! I have a Sagittarius Ergo mixer shower min bar of pressure required 1 bar. Connect to this is a 1.5 bar Ora Salamander pump for a positive head, this was connected by a plumber of course and we’ve had it all rigged up...
  19. av2597

    Water Circulator Pump Bust After Only 1 Year!

    Hi all, we have a water circulation pump to bring hot water from our woodburning stove and send it to a thermal accumulator tank. We've just started our second season and it's broken. I thought these were meant to last 10 - 15 years? We don't have a domestic water supply - we use water from our...
  20. A

    Need equivalent pump to Branston varispeed 50

    Wanted a new shower pump equivalant to a Branston Varispeed 50 After 12 years my shower pump has stopped working and it looks as though this type of pump is not made now. These are the details on the pump Bristan Varispeed 50, High performance Water Pump, Duel Cycle Continuous, and this number...
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