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A hydrothermal vent is a fissure on the seafloor from which geothermally heated water discharges. Hydrothermal vents are commonly found near volcanically active places, areas where tectonic plates are moving apart at spreading centers, ocean basins, and hotspots. Hydrothermal deposits are rocks and mineral ore deposits formed by the action of hydrothermal vents.
Hydrothermal vents exist because the earth is both geologically active and has large amounts of water on its surface and within its crust. Under the sea, hydrothermal vents may form features called black smokers or white smokers. Relative to the majority of the deep sea, the areas around submarine hydrothermal vents are biologically more productive, often hosting complex communities fueled by the chemicals dissolved in the vent fluids. Chemosynthetic bacteria and archaea form the base of the food chain, supporting diverse organisms, including giant tube worms, clams, limpets and shrimp. Active hydrothermal vents are thought to exist on Jupiter's moon Europa, and Saturn's moon Enceladus, and it is speculated that ancient hydrothermal vents once existed on Mars.

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  1. S

    Ventilation

    Hey guys, I'm sure this comes up a lot but I was hoping someone could help me out. I recently bought a new house with a Baxi Bermuda 401 back boiler in the lounge and an old gas fire over the front of it. I was surprised to find that the ventilation was located in the kitchen with no vents...
  2. W

    Ventilation For Open Flued Boiler?

    Hi there, I am about to sort out a service for my boiler. It is open flued, in a compartment, and the compartment is ventilated via ducts from the loft which go well above the insulation. My question is - Although there is plenty of ventilation in the loft, it is from vents around the eaves of...
  3. G

    Why you should always make sure you use a GSR engineer

    Customer said she didn't feel too good when she used her fire and wanted it checked over. I went up and had a look and found this had been installed without a vent. And far too close to the floor. Shoddy and potentially dangerous work from a cowboy.
  4. JCplumb

    Cast iron auto air vents

    Hello gents, Went to a job to replace a snapped off bleed fitting on a rad today expecting it to be a straight swap for a 1/2 inch one out of the toolbox and found this snapped off the 1 3/4" reverse thread bush from an old looking cast radiator. I phoned every merchant in Bolton and got no joy...
  5. M

    Very basic design question - from 'the other side'.

    Hi and thanks for reading. I am from the electricians forum but try to be as helpful as possible, Chris Murphy can vouch for me! I live in an old property. My walls are made from anything that was available be it beach pebble, cob, or stone. One corner of my living room is particularly cold...
  6. P

    Do Combined Feeds And Vents Also Suffer Blockages?

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  7. S

    Radiator vents

    Has anyone got any good tips for vents in radiators that are completely gone especially the ones with no access
  8. R

    Ses pit ventilation needs

    On a ses pit how many vents need to go to air and can you dergo a ses pit? Do you treat a ses pit same as standard sewer vent needs
  9. C

    Covering Gas Pipes Internally

    HI Everyone, Over the weekend I discovered a Gas leak in my lounge, which British Gas have sorted. They turned off the Gas until it could be fixed. And 1 day later have re-laid all my gas pipes in my lounge, however the gas pipes WERE beautifully under the floor and British Gas have...
  10. S

    location of auto air vents

    hello, we are installing a Ferroli Modena condensing boiler and could install auto air vents 1m from the boiler or near the end of the circuit. Is there any problem placing them near the boiler (loss of pressure etc)? Thanks
  11. B

    warmfront and vents

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  12. Q

    Vents on water tank take offs ???

    Hi Everyone Wonder if someone can help me. I have to replace a couple of 250g tanks and some pipework in an old London block of flats. the tanks are 6 floors up and feed the flats below, Comming out of the tanks are 2 x 1 1/4" pipes that have stopcocks on them and they then go down to feed...
  13. M

    Spirotop auto air vents

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  14. S

    Removing Air Vents from Flow and Return Pipes??

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  15. T

    Gas Pipe Duct/boxing

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  16. M

    Help appreciated for back boiler ventilation problem

    Hi there, I really hope someone can help me. I am a tenant in a mid-terrace property with a back boiler (approx 15 years old) situated behind the gas fire in the living room. There is a floor vent of 100cm2 near to the fire and boiler and two brick vents on the outside under the living room...
    • MAG
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    • Replies: 52
    • Forum: Plumbing Jobs | The Job-board
  17. B

    Floor vents for gas fires.

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  18. T

    Vents & OF applianes, Regulations advice please.

    Right basically my Misses is moving into a new place soon and the heating/gas work has been thrown in. Iam Gas Safe registered myself and was just wondering what you guys would class these faults as. Idealy I would like to AR these points, and perhaps coerce the council into installing a new...
  19. S

    Air vents necessary for installing Zanussi hob over electric oven cabinet?

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    • stuart_williams
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  20. B

    Terracotta vents

    Does anyone know where I can get a terracotta vent that gives 135cm2 or more free air flow. It's an old cottage and the customer doesn't want a plastic one as it'll look wrong. Been round all my local merchants today with no luck :sad_smile:
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