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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. D

    Kitchen sink DWV vent overflows. Puzzled

    The picture shows what i assume to be the dwv vent. It is a tall pipe going upward ending just below sink basin and open ended, lately when sink drains, this pipe overflows and floods base cabinet. How to fix? I dont understand why this sink is the only one with the seperate pipe like this...
    • Daybyday2k
    • Thread
    • america kitchen kitchen sink puzzled sink usa vent
    • Replies: 4
    • Forum: USA
  2. S

    Vented Hot Water Cylinder Without Vent Pipe!

    After calling a plumber to look at our leaking power shower he discovered that there is no vent pipe coming off the hot water cylinder . The cylinder is an old indirect vented cylinder heated from the central heating boiler and has a secondary electric immersion heater that is disconnected...
    • SK_London
    • Thread
    • america cylinder hot hot water hot water cylinder pipe usa vent vented water without
    • Replies: 11
    • Forum: USA
  3. Bbarclays

    No hot water open vent glowworm fuelsaverMKII R40

    Hi there Today friend was changing radiator valves, so he drained system, put radiator valves, new radiator. I notice TRV valve was on cold end- return or out line from radiator. I asked my friend to relocate TRV valve on inlet side. (when heating started, hot water was coming from white plastic...
    • Bbarclays
    • Thread
    • america glowworm hot hot water no hot water usa vent water
    • Replies: 2
    • Forum: USA
  4. DuncanM

    Fitting auto air vent

    Been advised to fit an AAV on return of a sealed system to try and keep air out of the HEX as it keeps error coding about circulation. Power flushed the system already, this is the next step. Anyway, usually fit AAV on positive side of pump so how far away from pump to make sure AAV does not...
  5. W

    Toilet outlet vent information needed

    I’v [ it goes Regards I’ve been at this property for 22 years, and I have just notice I don’t vent pipe [ it goes straight into the manhole ] or any valves on my toilet system. I have never had any issues such as smells drainage or odours. It’s a ground floor toilet and the only one...
    • wayne jones
    • Thread
    • america information needed outlet toilet toilet waste usa vent
    • Replies: 3
    • Forum: USA
  6. flapajack

    Boiler advice - can you use a system boiler on an open vent system?

    Hi I have a boiler problem I hope someone on here can help please. I currently have an open vent gravity feed system and a 10yr old boiler which is showing signs of terminal "kaputiness". The boiler is dripping consistently now (although not to bad yet) although it is still working. I am...
    • flapajack
    • Thread
    • advice america boiler system system boiler usa vent
    • Replies: 3
    • Forum: USA
  7. M

    Combined feed and vent with unvented cylinder

    Got a job today to take out vented cylinder and replace with unvented indirect cylinder (i’m G3 qualified). Only problem is the system has a strange set up. It’s combined feed and vent S plan system. Heating zone valve is on the flow and pump and hot water zone valve on return. My issue is that...
    • MethodPH
    • Thread
    • america combined cylinder unvented unvented cylinder usa vent
    • Replies: 7
    • Forum: USA
  8. SimonG

    Whats The Minimum Vent Off A Soil Stack?

    Looked a job today, possibly looking at reducing vent size as it's a difficult run. 75mm sticks in my head for some reason. Cheers.
  9. M

    Water does not flow trough the pipes

    Hi , i have this situation that once every few months the water stops from flowing from the tank to the house. So i go and disconnect the pipe from the 2nd filter and wait for half minute and water start flowing again. I made a drawing here on the picture to show how is set up. I was wondering...
  10. J

    No vent pipe from cylinder? Help would be appreciated.

    Hello, I thought I’d try fitting a shower pump today. Every thing works, other than the pump just fires water up the vent pipe and into the tank in the attic. i don’t know where this vent pipe has come from as there isn’t one coming off the top of the cylinder.
  11. M

    Soil Vent query. Bad smells

    Hi. I own a three storey house. 4 toilets. 3 showers. Since I moved in a couple of years ago there’s been a recurring (and very mild) sewer odour. Most can’t smell it but I can and it’s coming from the shower traps mostly. And sometimes the kitchen sink. At first I assumed a pipe blockage and...
  12. M

    Do I need a new Soil Pipe Vent in the roof?

    Hi, I am installing a new toilet into my en-suite bathroom (there isn't one there currently). There is an existing soil pipe under the floor that I can connect to but it is not vented and is currently just used for the shower waste. There is a toilet on the other side of my house that does...
  13. J

    Kudos radiator air vent & blank plugs removal?

    Any tips for removing plugs from a new Kudox radiator?
  14. C

    Bottle vent location.

    Morning, I’ve had problems with air in my central heating system. It’s always built up air (it’s got inhibitor) and needing buleeding regularly. I’ve fitted automatic bleed valves on most of the radiators, which seems to solve the air building up and causing problems. Bleeding it after it’s...
  15. Inverness

    F n e tank vent pipe dripping

    hi guys, I recently replaced a gravity cylinder to a pressured cylinder. In a 3 bedroom council house, Since then the f& e vent pipe is dripping? All I did was drained the central heating and the height for the flow and return was slightly lower than before by 50mm if this could of created more...
  16. S

    Settling a current soil and vent termination dispute

    Morning all, I’m on a new build site and the sparks has installed a extractor fan outlet within 3m of my S&V termination( i Came through a gable end first with NO opening into the fabric of the building within my 3m .... windows or vents) My 110mm termination is to vent a branch that has 6...
  17. S

    Vent bathroom ceiling fan through rosemary tiles

    I need to vent an inline bathroom fan through my roof which has rosemary tiles on and no sarking underneath the tiles. Never done this before so would like your advice to get it right first time. Any help will be much appreciated.
  18. A

    To vent or unvent, that is the question?

    Hi. We have moved to a new house with 3 bathrooms and need to move the hot water tank due to some interior work on the upstairs. We currently have a vented system, and so we are considering changing to an unvented system. As part of this we are going to also get a new boiler and flush the...
  19. S

    INTERGAS. Use of Fitting Kit / Offset Flue on an HRE Open Vent boiler

    Hello, from South Devon. Firstly - I'm not a Gas Safe RGI. I'm considering my options to replace a 23 year old |Ideal Classic FanFare 50,000 kw open vent boiler which works OK but could well terminally fail and I want to be prepared (I'm thinking another fan, gas valve or PCB would be the last...
  20. M

    Scratching my head (open vent)

    I need to tap in to the central heating due to an extension with underfloor heating that’s gone in. I want to be more than sure before tapping into the system due to its complexity and being an open vent I’m going to freeze the pipes I need to, so I can work on them. I was hoping to double check...
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