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gravity fed system

Gravity feed is the use of earth's gravity to move something (usually a liquid) from one place to another. It is a simple means of moving a liquid without the use of a pump. A common application is the supply of fuel to an internal combustion engine by placing the fuel tank above the engine, e.g. in motorcycles, lawn mowers, etc. A non-liquid application is the carton flow shelving system.
Ancient Roman aqueducts were gravity-fed, as water supply systems to remote villages in developing countries often are. In this case the flow of water to the village is provided by the hydraulic head, the vertical distance from the intake at the source to the outflow in the village, on which gravity acts; while it is opposed by the friction in the pipe which is determined primarily by the length and diameter of the pipe as well as by its age and the material of which it is made.

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  1. K

    Smart Pump Setting with gravity fed system

    Central Heating Pump - G Pump Force HE-RS25/6PWM-130 Hi, I would be grateful if someone could explain whether our CH system can cope with the AUTO (adaptive mode) setting on this the new pump or which mode it is best set at (recently had our old 3-speed pump replaced with the above smart...
  2. R

    Gravity fed system not sure how this valve works

    This valve is fitted to the lower heating coil of the hot water cylinder Can anyone say what is the point of it I have been told its a thermostatic valve to control hot water temp so would have thought it may be in the wrong position ?Any explanations welcome
  3. W

    Taking forever to pressurise gravity fed system. Why is this?

    Hello, I live in a two floor semi with a gravity fed conventional gas fired boiler (Potterton Kingfisher MF). The boiler is fed cold water from the loft water reservoir tank (which also feeds the cold water taps in the bathroom & the WC cistern). There is an expansion vessel attached to this...
  4. C

    Gravity Fed system in Bungalow with two Automatic Air Vents

    Hi, I’m replacing my old Honeywell Smartfit system on a oil fired gravity-fed system in a bungalow. I’ve read conflicting advice on gravity fed systems requiring an AAV, unless in a bungalow to aid bleeding on first fill? One AAV is in the loft on - what I think - is the boiler return pipe...
  5. R

    Can you have mains pressure cylinder on a back bolier?

    I have been told that I can't have a mains pressure unvented hot water cylinder with a back boiler on a wood burning stove as the heat source is uncontrollable. Is there a method to make the heat source controllable? I was imagining that if the cylinder was at its maximum temperature then if...
  6. M

    Urgent advice - Replacing gravity water system

    We need an urgent advice, we have a gravity water system and we are in a middle of loft conversion. We are adding an en-suit in loft and prefer to have a good water pressure there. What we want, is to either be able to run multiple showers at once, or if one person is having a shower, other...
  7. M

    Changing from spring water to mains

    I live in an old cottage which is fed off a spring. A new house has been built at the end of the row so an opportunity to connect to the mains has come up. The current set up is the feed comes in, goes through a filter, into a pump to a tank in the loft then is gravity fed. The pressure is...
  8. M

    Changing from spring water to mains

    Hi, I live in an old cottage which is still fed off a spring. There's very little pressure in the system which comes in, then is pumped up to a tank in the loft and is gravity fed. A new house has been built on the end of the row so an opportunity to connect to mains water has come up. Would...
  9. T

    Rayburn and water heating.

    Hi, seeking some advice on a Rayburn and control of hot water. Leaving out a very long story, my mothers house is about 200 miles away from me and she has recently moved into a care home. My brother and I need to renovate this from afar in order to rent it out to help with funds for her...
  10. A

    Triton shower stuck on max flow

    I need advice about diagnosing why our Triton shower is stuck on max flow, with the flow control dial not responding, please. It switched on/off ok with no leaks. The filters were clear, but there is a lot of black spot inside the whole unit. Temperature is also good It's a Triton IPS Thermo...
  11. B

    Advice Needed: Can I install gravity fed toilet, basin and shower in new en-suite location?

    Good morning all, -I would really appreciate your advice on whether it would be possible to have a gravity fed toilet, basin and shower installed in a my new layout upstairs? The detail: I currently own a two bed house (is actually a three bed on original plans) and want to covert it back to...
  12. T

    URGENT Mixer Shower and Gravity Fed System

    About 10 years ago we had a new mixer shower fitted. However, the most we ever got out of it was a trickle - even from the beginning. At the time I looked up the manufacturers installation instructions and it says that the showerhead needs to be at least 1 m from the bottom of the water tank we...
  13. H

    Converting gravity fed to pumped system

    have an old system, large water tank and small f&e tank on loft, hot water cylinder on first floor, boilder on ground floor (Ideal Mexico Super C 125, vintage 1987, works well though had new stat put in recently). Would really like to just change HWC and leave everything else in place, though...
  14. S

    Problems with hot water on a gravity fed system.

    Asking for a neighbour. He has an old style gravity fed heating system with tank and immersion heater. He has just changed the pump and three way valve actuator. His heating works but if he selects hot water it turns the heating off. Any suggestions would be appreciated, thank you.
  15. C

    Hive to replace Drayton LP722 on Gravity Fed System

    Hi all, I am planning on replacing my Drayton LP722 Programmer for a Hive programmer.( THIS HIVE?? : https://www.amazon.co.uk/d/Home-Kitchen/Hive-Heating-Thermostat-Professional-Installation/B011B3J6B8/ref=sr_1_2?ie=UTF8&qid=1547395207&sr=8-2&keywords=hive%2Bheating%2Bhot%2Bwater&th=1 ) The...
  16. D

    Replacing radiator and draining systems

    Evening, I will be changing a radiator in my downstairs toilet. Looking for advise on best order to drain and fill system and any potential issues with doing this. I have gravity fed system. Any help is appreciated. Thanks
  17. J

    Positioning Heat Sink Radiator on a Gravity Fed System

    Hi - I am putting in a new multifuel boiler stove (max 9.6kw to water), connected up to my vented thermal store, which I am looking to do on 100% gravity. The pipework runs 2m vertically from the stove, 2x45 degree bends, then a 7m horizontal run (with a very slight incline), another 2x45 degree...
  18. A

    Please Help! Overflowing Gravity Fed System

    Hi All, I am not a plumber, but a fairly competant DIYer. I am having a problem with an old gravity fed hot watre system and am tearing my hair out trying to figure out what could be causing the problem. So, what appears to be happening is the Larger tank in the loft fills until it lifts the...
  19. T

    Advice needed reg Gravity fed system

    Hi guys First post so bear with me please. I'm seeking advice regarding the central heating in a home I have just bought, it's a first home and this is my first experience of heating systems. The house is in a rural area and uses a Worcester oil fired boiler, so far from what I can see with...
  20. F

    pump advice for a gravity fed system

    Hi all, Please can i have some expert advice. I have a gravity fed system and i've just bought a lovely mira digital low pressure shower system that comes with a pump specifically for gravity fed systems. This pump will just provide pumped water to the shower. As i'm also in the process of...
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