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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. A

    Baxi has me scratching my head

    HI, I'm looking for some advice from someone who may have encountered my problem before. I'm a gas engineer and i have been trying to solve an issue with a baxi duo-tec 28 HE. The boiler randomly calls for CH when the thermostat is not, the green LED lights up for around 5 minutes before...
  2. D

    Fixed Head Shower Plumbing

    I have a low pressure system with 2 x 22mm pipes going from the loft tank and HWC to the full flow bath mixer/shower taps. The bath taps head is 0.25 bar. The flow rate at the bath with both taps on is 32l/min. The bath mixer/shower tap has 2 x 5mm diameter holes within the diverter that feeds a...
  3. J

    A standard problem. Plastic bath leaking from over head shower.

    Hi. I live in east London.... Require a plumber who has experience with sorting out the age old problem of the plastic bath not sealing due to movement. On inspection, I can see it was installed with 4 legs, but no centre base support. I also cannot see any batten running along the wall. The...
  4. Captain.rick

    Highest head macerator

    Hi guys/girls In case any of you guys don't know I'm pretty much just a gas man.. so I'm not too clued up of all aspects of plumbing. The question I have is what is the highest pump head selling macerator? I kind of need one on my own house as it will probably be the cheapest and quickest...
  5. S

    Head scratching moment.

    Hi all, On my current job (plumbing ,CH/HW) for a loft conversion on a first floor maisonette. I was planning on adding a water accumalator to improve pressure and flow rate. which is looking like a no go due to cost. I think the route we are going to take is to increase the water main size...
  6. S

    Salamander negative head pump

    Hi all hope some one can help, i have fitted a tee a salamander negative head pump to a customers house about 3 years ago, it ran fine untill the last 3 months but now after every shower the second error light comes on, I have fitted a new pressure vessel and it already has a salamander flange...
  7. R

    Shower Head Blocked. How to disassemble?

    Hi. My shower head as got blocked up with limescale. I've poked pins in all the holes, soaked it in vinegar, painted it with Kilrock etc and still sections do not produce water. Is it possible to disassemble this (and get it back together!); Any clues as to how to take this apart? (Or who...
  8. T

    Dishwasher connection. No space. Head ache.

    Hi all. I'm putting a new kitchen in my flat and being an old Georgian building nothing is square or level. I measured the kitchen but obviously didn't allow enough tolerance as my dishwasher is super tight. The dish washer measures 600mm wide and 550deep. My void for it is 600mm (so ok)...
  9. J

    Is a drain really necessary with a deck mounted showed head?

    I have deck mounted bath taps with a separate shower hose to install. The shower head comes with a drainage box which is mounted underneath the deck to re-route any water that runs down the hose into the waste. Is this essential?? Space is very limited and I may not even have space to drill all...
  10. M

    Swap actuator head - Wavin

    In our UFH I have noticed that 2 actuators are in the wrong position. When the stat for a room is calling for heat 2 actuators open but 1 of them is to the wrong pipe so 2 need swapped over. Would they simply screw off or clip off? Is this something I could do myself or would I need to get...
  11. S

    Upgrading my heating and new shower head!

    Have a 2400sqft house built in 2000 with not great design if I'm totally honest. Large open planned living,dining,kitchen (75sq meters). Large windows and French doors and not great insulation. I'll be separating living area from dining/kitchen with double doors. I'm getting walls pumped next...
  12. W

    Difficult tap head removal

    Hi guys, Having difficulty removing this tap head to replace the washer. No visible seam to remove the cap looks like a one piece but I can't be sure. Any advice on what to try.
  13. R

    tap head

    anyone recognise this one? even i am stumped for replacement valve!. cant even see or id the nut to take it off?
  14. R

    Stuart turner Twin 1.8 pump for sale negative head

    Hi sorry if this ain't allowed I just thought one of our resident pro's may want this pump before I stick it on fleabay, Shes in perfect working order , only removed as I fitted a whole house pump instead of just a single pumped shower. Fitted with an incredibly long cable. Make me an offer...
  15. S

    Replacement TRV Head

    I took my broken TRV head into my local plumbers hoping to get a replacement one. They said they couldn't get me one. I would think I could buy one on the net but can someone identify this head so I know what to look for please?
  16. Jock Spanners

    3/8 square head, long T bar stopcock key

    HI Guys, Does anyone know where I can buy a 3/8 square head, long T bar stopcock key? My village has quite a few smaller valves in the street and I'm sick of having to call out the water company every time I need to fix a stopcock.
  17. J

    Pull out shower head for bathroom shower

    Hi, I am not a plumber! I'm pretty good at DIY and I learn quickly but my dad always told me not to mess with electricity, gas or plumbing and dad's always right of course. I live in Malta but am English and need advise from proper plumbers who know what they're doing instead of the cowboys...
  18. A

    Just need this tap head as cracked.

    Hi I need to get one of these heads as the one in the picture is cracked. Looks like a standard set of taps, does anyone recognise them?
  19. B

    How do I remove this tap head? Please help!

    Hi, This tap is dripping so I'm trying to take it apart to replace the washer but I can't work out how to get the head off the tap. Can anyone advise me please? I took the C for cold plate off expecting to find a screw head but there isn't one. There isn't a little screw on the side of the tap...
  20. G

    Vokera head scratcher

    Called to an 18 month old Vision 30C earlier with poor hot water. Hot water luke warm at best showing a max of 35 deg on boiler display. If slow tap to little more than a trickle the temp gets up around 60 deg eventually. No issues with heating. Boiler fitted to an old back boiler heating system...
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