grundfos

Grundfos (Danish pronunciation: [ˈkʁɔnˀfʌs]) is the largest pump manufacturer in the world, based in Denmark, with more than 19,000 employees globally.
The annual production of more than 16 million pump units, circulator pumps (UP), submersible pumps (SP), and centrifugal pumps (CR). Grundfos also produces electric motors for the pumps as well as electric motors for separate merchandising. Grundfos develops and sells electronics for controls for pumps and other systems.

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  1. R

    Bleeding Grundfos Selectric pump

    Hi all Can anyone help with the above? when the pump first starts I can hear a little gurgle, and when it stops I can hear a small slosh as water settles, when it's running it sounds fine. Until recently I didn't know you can bleed pumps, so read a little about it and figured out you just...
  2. S

    Excessive current at Grundfos UPS2 heating pump start up

    Chaps, I am after some advice regarding a brand new Grundfos UPS2 pump which appears to be drawing excessive current at start up. It is being used in a domestic gravity hot water/pumped heating system and replaced an old Selectric pump which had been in use for > 15 years in the same...
  3. S

    grundfos alpha 2l 15 50 ----- not pumping

    hi all, about 3 weeks ago i fitted said pump and all was fine. but 2 days ago we started getting noises, banging etc. when i looked at the pump the power light was on, but not the speed setting light and the pump wasn't working. i unplugged the jack plug, then reconnected, the power light and...
  4. S

    Saniflo Products - Any Good?

    Hi everyone, I'm new to the forum and have a couple of questions about Saniflo products:- 1. Are they any good? 2. Are there any cheaper/better alternatives? The reason for my asking is that I'm due to start a project for an En-Suite which doesn't permit me to use conventional drains, due to...
  5. G

    Grundfos Alpha2

    Hi, looking for advice from you guys, the plumbing experts. Ever since my old Grundfos central heating pump (blue in colour) packed in over 9 months ago the local plumber replaced with the grundfos Alpha 2. It's been a nightmare truth be told! the radiators have been banging which I've been...
  6. wildcard

    A rated pumps

    Was talking to another gas engineer & he told me he had to change a combi over as he could"nt get hold of the old type pump! Anyone else had this prob?
  7. E

    Grundfos - mini pressurisation units

    Has anyone every fitted a grundfos mini pressurisation unit . I've got to fit one as well as a low lost header tank ..
  8. M

    Heating Pump unions???

    Hi all Took delivery today of a grundfos 32-80 180 ups pump. It is the c rated type not the new type! no fittings are supplied and I need to get down to 28mm copper so I just want to confirm the size of the pump tappings? I reckon they are 2" and a standard pump valve is 1 1/2 i assume its a...
  9. C

    Water Regulations approved booster Pumpset

    Got go and see a potential one Monday pm - I think its a grundfos - effort - bumps things up to 11/12 litres a min but is water regs legal -------- anybody know the name model make and has anybody fitted them - are they any good. They boost up combis in low water pressure/volume areas and steal...
    • Centralheatking
    • Thread
    • approved boost booster grundfos pressure pump regulations water water regulations
    • Replies: 17
    • Forum: Plumbing Jobs | The Job-board
  10. D

    Variable flow Water Pump for instant water heater?

    Hi again I fitted a instant electric water heater to supply hot water for whole flat but the hot water flow are quite low So I am finding a pump that can: 1. pump only on when water flow so no pump noise all the time and the pump have longer live 2. pump can tune how much water flow/pressure...
    • DuckyUC
    • Thread
    • boost enough flow grundfos heater instant pump water water heater
    • Replies: 103
    • Forum: Plumbing Jobs | The Job-board
  11. 1

    grundfos macerator

    hi all, has anyone got any links to were i could find any instructions/parts, or drawings for the grundfos macerator x. the one i have just looked at, the pan spigot connection has come away from the macerator itself and when the toilet is flushed hence water is discharging from here. i have...
  12. T

    Grundfos 32-80

    we have a large domestic heating system. It has two Grundfos 32/80 pumps which were in place for just over a year. They both blew on the same day - ie the black box on each one with the electrics fried. This happened duiring a storm and depsite the fact the...
  13. G

    Power shower and a single Grundfos Booster Pump

    Hello I am a plumber and I have come across a problem that I need confirmation form someone out there that I am giving the right advice. Firstly I'm no newbie I've been doing plumbing for a very long time, but the good thing about the domestic plumbing is that you always come across something...
  14. V

    Fitting higher head Grundfos pump to Worcester boiler.

    My Worcester Danesmoor 15/19 boiler has been intermitantly locking out since extra rads were fitted on the third floor. All the usual checks (including flushing) failed to fix the problem. It seems the high limit thermostat is actuated by poor circulation in the system. The old UPS 15-50x18...
    • vee-tail
    • Thread
    • before boiler fitting floor grundfos head higher lockout oil pump system worcester worcester boiler
    • Replies: 7
    • Forum: Plumbing Jobs | The Job-board
  15. P

    Grundfos pump plan

    I am having trouble with the small plastic check valves in the outlets of the Grundfos Pump Plan twin pump set, fouling up. After cleaning they rarely seem to work properly, and the price of new valves is ridiculous. Is it possible to remove each plastic valve and cut in a brass single inline...
  16. Whn1

    Grundfos pump rotation tester.

    Where do I get one? Don't say amazon.
  17. G

    CH Pump Stalls when hot

    My central heating pump works fine until the the heating/water has been on for some time (around an hour) and every thing has got nice and hot and then it stalls and refuses to start. Ive tried giving it a kick start by undoing the spindle cap and manually turning it but that doesnt work. I can...
  18. 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
  19. G

    recycling grundfos circulating pump?

    hi,I have a grundfos circulating pump that i rescued when the old boiler tank were replaced with a combi boiler,In the interest of RECYCLING are they useful for anything, apart from in a central heating system? perhaps in a fish pond? in the garden? can they push water along? i did a google...
  20. S

    grundfos pump switch

    is it possible to change the electric switch and speed control on a grundfos pump and if so how to do it

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