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bleeding

Bleeding, also known as a hemorrhage, haemorrhage, or simply blood loss, is blood escaping from the circulatory system from damaged blood vessels. Bleeding can occur internally, or externally either through a natural opening such as the mouth, nose, ear, urethra, vagina or anus, or through a wound in the skin.
Hypovolemia is a massive decrease in blood volume, and death by excessive loss of blood is referred to as exsanguination. Typically, a healthy person can endure a loss of 10–15% of the total blood volume without serious medical difficulties (by comparison, blood donation typically takes 8–10% of the donor's blood volume). The stopping or controlling of bleeding is called hemostasis and is an important part of both first aid and surgery.
The use of cyanoacrylate glue to prevent bleeding and seal battle wounds was designed and first used in the Vietnam War. Today many medical treatments use a medical version of "super glue" instead of using traditional stitches used for small wounds that need to be closed at the skin level.

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  1. G

    bleeding an oil tank

    Hi, I have a rhino oil boiler and I ran out of oil, it now wont start....after much you tubing I think it needs bleeding....Ive managed to find the 'sticky out hexagonal thiny' which I can fit a 4mm (i think) allen key into, and can remove the wee thing inside the sticky out thing....but nothing...
  2. B

    Bleeding hot water system

    Hi, i have an oil boiler heating 3 zones, one of which is hot water. I removed a radiator last week so accordingly opened all 3 valves manually and drained the system before plumbing. On completion i refilled the system and vented the radiators from the bottom up. Both heating zones are...
  3. D

    Radiator needs daily bleeding

    Hi, I have a CH problem which I've done a bit of diagnosis on, but am stuck with what to do next. I'm a DIY-er, not a professional - I have no problem calling a heating engineer in, but want to see firstly if it is something I can fix myself, and secondly have enough info to give the engineer...
    • Deleted member 77550
    • Thread
    • bleeding boiler could needs radiator system towel water
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  4. W

    Humming pipes in a combi boiler system, bleeding not helping.

    Hi, I've been having an annoying problem of humming pipes in a house. I've outlined the details below, I've had a plumber round who suggested they couldn't help without hearing the noise, however it isn't constant and mainly comes at night so this is proving impossible. Any advice would be...
    • wooding
    • Thread
    • bleeding boiler color combi combi boiler humming noise oil pipes radiator system
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  5. Eyespy999

    Towel radiator constant bleeding of air

    Hi, I was wondering if anyone has any advice please. i have a towel rail radiator, every few weeks it goes cold at the top and I end up bleeding quite a bit of air from it. No pressure drop on the system just air! It's been like it for ages but looking for a solution. Thanks
  6. F

    Bleeding customers!!

    Don't you just love driving an hour to a pre booked job - to find out the customer decided to go out and you will "just have to re book the job for Monday when i'm home"...?? Yep, me neither...:furious3::furious3::furious3:
  7. L

    Is it air or hydrogen, when bleeding a rad?

    Hi all, how do you test for hydrogen, when bleeding rads? If I know the gas coming out of the rad is hydrogen for arguements sake when I bleed it, then I know internal corrosion, is taken place. So I can eliminate, air being sucked in. Thanks:tounge_smile:
  8. S

    Bleeding a radiator problem

    On one of the radiators I am not able to move the valve to release the air - it appears seized. Any tips on ways to free it ? Can I do any damage ? ( if its possible I seem to do it ! ) Thanks for any help.
  9. M

    Bleeding radiators

    How often would you normally need to bleed radiators? I moved into a property recently and noticed straightaway that a couple of radiators needing bleeding. I bled them and they seemed fine after but only a couple of weeks later I had to do the same two again, all the others are fine. Is this...
  10. J

    Bleeding stupid customer im having a drink.

    Fooking livid. get a call from a cust 2 weeks ago diagnosed faulty pcb on baxi solo he blowing the 3amp fuse. Pump and diverter valves, so I was in and out from cellar as i was testing stuff before i traced it back to boiler. Told her what it was gave her a price to fix. anyway i get a call...
  11. S

    Help with bleeding a radiator

    Hi, I'm having trouble bleeding my radiator in my loft conversion. I had the loft conversion around 4 years ago and this has a bathroom and bedroom up there. The bathroom rad does need bleeding as well as it is bubbling when turned on but the little flat head screw thing has one of the bits...
  12. E

    Bleeding tube for an oil burner

    Hi we have got an Worcester Greenstar heat slave 12/18 boiler and had to recently bleed it. it was quite ***bersome and a tube with a valve, which one can turn off would make it easier. any body know where i can buy one and what it is called? i saw on on u tube but he did not say where to buy...
  13. B

    Help with bleeding oil burner

    Hi there, I have a Worcester Greenstar Camray 12/18 Utility. I've run out of oil over night and got an oil delivery today. When pressing the red reset button, it sounded as if the boiler would come on again, but cut out after a few seconds. (I pressed the button 4 times, I hope that's not too...
  14. A

    Rads needing bleeding daily

    Hello guys..im a gsr engineer with limited experience hopefully someone could help.. open y plan with a profile fitted, bathroom and rad in bedroom need bleeding daily....pump and openvet/cold feed correct configuaration, cold feed not blocked.. ive lowered the pump speed, same leak sealer in...
  15. Kewat66

    Constant Radiator Bleeding

    Hi All, I have an ongoing issue. Cleaned a central heating system out on an open vented system but i am constantly going back to bleed 1 radiator. I have checked all around for leaks to try and see if any areas air could be entering from but all looks fine. i drained the system down again and...
  16. P

    Radiators need bleeding every day !!

    Hello, I recently started my own property maintenance business along with level 2 diploma in plumbing and heating. However I am currently working at a house where the radiators require bleeding every day. I have been advised by my college tutor to pour fernox cleaning inhibitor in the system...
    • paul.binding.52
    • Thread
    • bleeding could every fernox hydrogen radiator radiators sealer system
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  17. L

    Denso Tape covering heating copper pipes bleeding through Plaster

    Hi everyone, I need some urgent help, we had 4 radiators fitted 2 weeks ago with chased copper pipes. Understood that the best way to avoid corrosion was to cover them on Anti-corrosion tape (Denso Tape), however no-one told me that the oil (Petroleum) would bleed because of the heat and stain...
    • londonbian
    • Thread
    • bleeding copper copper pipes denso heating pipes plaster tap through
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  18. A

    Bleeding oil heater

    Hi, my Worcester greenstar heatslave is not starting up at all since the oil has ran out, I've had my tank filled up, I have tried to bleed the boiler by disconnecting the braided pipe leading into the pump and hitting the lockout button as advised on other blogs but after pressing the bottom...
  19. M

    One downstairs radiator needs bleeding every other day

    Hi I have a Vaillant ECOtec conventional boiler. The system has been in the house since new approx 20 years but had new boiler this year. I had an extra radiator installed in downstairs toilet at the same time. The radiator is plumbed to come on when hot water is on. Boiler is in garage next to...
  20. T

    Bleeding system, 2 rads not bleeding

    Im just a DIY'er but i wanted to remove my radiators on my new house tonight to strip the paper from behind them. The system is all combi-boiler heated with no tanks left in the house. I noticed there were 2 system bleed points when i started. I put a hose to the first in the dining room and...
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