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head

A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste, respectively. Some very simple animals may not have a head, but many bilaterally symmetric forms do, regardless of size.
Heads develop in animals by an evolutionary trend known as cephalization. In bilaterally symmetrical animals, nervous tissues concentrate at the anterior region, forming structures responsible for information processing. Through biological evolution, sense organs and feeding structures also concentrate into the anterior region; these collectively form the head.

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  1. W

    Broken head on TRV

    Hi, I need to remove a radiator for decorating. The head on the TRV has snapped off so that the pin is exposed. Does this mean that the TRV is open so that water will flow through it or will it be shut closed so no water will flow. (I cannot loosen valves and lift radiator off brackets and...
  2. Deleted member 32524

    Powerflush through pump head.

    Hello, Doing a powerflush and I have bought the pump head adaptor for my Kamco machine. Question is. Has anyone has any problems using this method i.e pumphead not sealing properly once you put it back on, etc?
  3. K

    Head scratcher

    Anyone help with this problem? Noisy heating system. 12 month old main combi. Always noisy heating since install. Boiler in garage. Pipes enter house via master bedroom this is where the noise is worst and the kitchen directly below. Pipework is 8mm. The noise sounds like mains water does when...
  4. M

    Cannot take off tap head

    I cannot take off the tap head? There is nothing obvious. The knob is loose and needs a tighten. The end cap is like a watch back, but no lip to take out. No knife or blade will move it? Any ideas thanks.
  5. S

    Head Melter - Replacement boiler gone horribly wrong

    Hi - I had a couple of the lads replace an oil fired boiler that was leaking. It was a 4 piper with two pumps on the central heating side for two zones and one pump on the hot water side. The new boiler - Grant 90/120 - has only a a single flow and return tap in. The lads linked all together and...
  6. C

    stubbourn tap head removal

    with New Pegler Yorkshire Bathroom Taps : Pegler Yorkshire 159 cross top cold basin tap 1/2inch BS1010 this type tap , has anybody ever had any trouble having the actuall head off to tighten the gland??? ive had and have had enough with trying to slap it off upwards with the adjustables! so...
  7. T

    Help. How do I remove this tap head?

    Can anyone advise on how to remove this kind of tap head? I'm at my wit's end. Thanks.
  8. turnpin

    RIP off Britain rear`s it head again

    Really pee`d off had a call from the younger son earlier on going to Whipsnade zoo see you later ...£21 him ..£21 his Wife £20 to take the car in not sure how much for the Grand son as Daughter in law thought under three did not pay so she kept quite [although in a court of law she could have...
  9. G

    channelling pipework in walls connecting to a central valve head

    Hi all, I've purchased 3 x vertical rads (H:1800mm x 600mm). I couldn't stand looking at the surface mounted pipes running from ceiling to floor, so I decided to bury the pipework into the walls. I was advised to channel out a chase around 20/25mm in the wall, which I have done, this chase runs...
  10. Z

    Head wrecker!

    Got a row of 6 houses on my contract all new builds. Worcestor greenstar r28 he system http://www.acwilgar.co.uk/Boiler-Manual-PDF/Worcester%20Bosch/GreenStar%2028%20HE%20System.pdf Problem is radiators in the back of the house only get Luke warm unless you turn the front off. There is a gate...
  11. D

    pump head adapters

    hi guys im thuinking about buying an adapter for power flushing and their seems to be a few different makes out there. some of them look like they have plastic threads and some brass. just looking for any advice bcos i hate wasting money on poor quality tools. any advice would be appreciated ta
  12. V

    It's gone to his head.

    I always though croppie was a wrongun and that him being made into a mod was a mistake, but now it seems the power has well and truly gone to his head look what he just did to me :-) Im not your friend :wink_smile:
  13. 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
  14. B

    head breaking device for oil tank?

    I need to fit a oil tank 6 meters above the boiler and the manufacturer states if its over 5 meters then a head breaking device needs to be installed yet ive never heard of this. Anybody know what this is?
  15. F

    Grunfos twin head circulating pump and new foil backed fibreglass lagging for sale

    hank-attack | eBay Follow link above
  16. R

    How to remove tap head???

    Hi, hope someone can help, I've come across this tap which I can't seem to get into, any ideas? It's Bristan if that helps. cheers
  17. 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
  18. A

    Hep,push fit, copper head done reet in

    Big problem need help.10years ago I had an extension put on my house. The original par of house is fitted with 10mm copper radiator pipes, no problems ever. The extension was titled with 10mm microbore plastic, which after I year or so I've had limited flow to rads, blocked plastic pipes, which...
  19. M

    Turtle Head

    I've got one and can't be arsed to move. I think I'll wait until it's touching cloth and hope I can make it up the stairs in time. Must remember not to fart in the meantime.
  20. M

    bath mixer/shower head combo question

    Hi all, You know those taps with the shower head and hose attached that has the knob you pull up to get water to go to the shower head? Well can those be serviced? My uncle says the problem with his is that when you pull the knob up (water flowing) only about 60% goes up to the shower head and...
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