Search the forum,

cylinder

A cylinder (from Greek: κύλινδρος, romanized: kulindros, lit. 'roller', 'tumbler') has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. Geometrically, it can be considered as a prism with a circle as its base.
This traditional view is still used in elementary treatments of geometry, but the advanced mathematical viewpoint has shifted to the infinite curvilinear surface and this is how a cylinder is now defined in various modern branches of geometry and topology.
The shift in the basic meaning (solid versus surface) has created some ambiguity with terminology. It is generally hoped that context makes the meaning clear. Both points of view are typically presented and distinguished by referring to solid cylinders and cylindrical surfaces, but in the literature the unadorned term cylinder could refer to either of these or to an even more specialized object, the right circular cylinder.

View More On Wikipedia.org
Recent contents Top users
  1. N

    Water cylinder re heat time

    Hello all, i am doing work for a customer who has asked me what the reheat time of a 250 litre cylinder is. To be honest after all the years of doing plumbing this is a question that i have never been asked before because usually if you need a hot water cylinder then it is what it is, you just...
    • Nwalky
    • Thread
    • america cylinder heat hot water cylinder reheat storage time usa water
    • Replies: 7
    • Forum: USA
  2. A

    Gledhill Unvented Cylinder Loud Bang Hot Water Demand

    Recently had a new heating and hot water system retrofitted in a domestic property. Previous hot water system was gravity fed with a vented cylinder. New system as shown in the photos. Installer commissioned system about 3 months ago and all was working fine. There have since been two faults...
    • Adam-Robinson
    • Thread
    • america cylinder demand gledhill hot hot water unvented unvented cylinder usa water
    • Replies: 24
    • Forum: USA
  3. H

    Should I dpressurise hot water cylinder?

    I am closing up a property for 2-3 months and will be turning mains water off. Hot water is supplied by a pressurised water cylinder in the loft. Should I depressurise it before I leave the property? If so is it simply a matter of switching water off and run hot tap for a while? Any advice...
    • Hillabaloo
    • Thread
    • america cylinder hot hot water hot water cylinder should usa water
    • Replies: 1
    • Forum: USA
  4. I

    Overflow issue combination cylinder

    I instanly assumed I had a problem with the ballcock valve as overflow pouring out but on inspection I noticed that the ballcock is working efficiently but water seemed to be coming into the top of the tank from what I think is the internal vent making me think the hot water is overheating and...
    • Illuminate
    • Thread
    • america combination combination cylinder cylinder issue overflow usa
    • Replies: 10
    • Forum: USA
  5. B

    Solar Thermal Cylinder Installation

    I had a solar thermal cylinder installed last week. The installers had an issue with one of the valves and installed a 15mm pipe (see red arrow in picture) instead of the 22mm at the valve. Is this going to be an issue? The 15mm then feeds into the larger 22mm. However, my concern is that...
  6. Stants

    Pipework type / design for Unvented Cylinder ( 170 L Megaflo Eco )

    Hi I'm tying / hoping to run a drain for an Unvented indirect cylinder I need to run it now as I want to close in the building ( its in a loft conversion ) I'm having great difficulty getting someone to fit the whole system for me , it was being done by a guy but now he can not do it as...
  7. S

    Unvented cylinder discharge into 1980s Marley plastic rainwater hopper and pipe?

    I live in a shared building with a flat above me. My upstairs neighbour has just fitted an unvented hot water cylinder. The plumber has run the 22mm copper discharge pipe into the old plastic Marley hopper and downpipe, which discharges straight into the sewer. This downpipe also carries...
  8. A

    Potential Air locks in TP210B cylinder pipework

    I have a Santon TP210B cylinder - I am told I have air in the system which is stopping the hot water from working. I have chopped into the existing heating circuit to add another radiator, but the hot water system seems to be suffering the most, which I cannot get my head around - This new...
    • Andrew Lear
    • Thread
    • air america cylinder locks pipework usa
    • Replies: 3
    • Forum: USA
  9. M

    Unvented cylinder constantly sounds ‘on’

    Hi, I have an unvented cylinder and lately even without the boiler central heating or hot water ‘on’, the system sounds like it’s constantly ‘on’. All through the night, it used to be silent except when running, but now it can sound like it’s ‘on’ constantly for days at a time. Surely this...
  10. S

    Should the pipe from the top of the Water Cylinder be hot rather than warm

    Hi all, I have a Megaflo Heatrae Sadia running from a conventionla boiler. The boiler is 12 months old, the cylinder about 6 years old. The cylinder has two separate pipes in at the bottom left, both of which are too hot to hold for more than a second. There is a stone cold pipe going in the...
    • Shimmasok
    • Thread
    • america cylinder hot pipe rather should top usa warm water
    • Replies: 14
    • Forum: USA
  11. A

    Pipe blown off mega flow cylinder due to pressure?

    Hi, Two days ago we noticed we had no hot water. We have a mega flow tank/cylinder in our airing cupboard. It appeared that the lack of hot water could not be solved by setting the motorized valve to 'manual' so as to open the valve to allow heated water 'in' having been heated from the...
  12. Jock Spanners

    Has anyone fitted a hybrid ASHP/solar thermal/unvented cylinder system with gas boiler back up?

    Good Afternoon All, This is my first time on the renewables forum so please forgive my ignorance. I've been interested in ASHPs for about 15 years but have always doubted their economic viability - especially for retrofits. Now that there will be no gas connected to new builds in 4 years I am...
    • Jock Spanners
    • Thread
    • anyone boiler cylinder fitted gas gas boiler system
    • Replies: 9
    • Forum: Renewables
  13. J

    3-tee rule on unvented cylinder

    Hi all, Just getting my head in a twist regarding the 3-tee rule (last tee on the return pipe should be hot water). I have a customer with an unvented installation, with two 2-port valves for CH and HW. He's built an extension, and wants to add a new circuit of radiators to the system. The new...
    • Jennie
    • Thread
    • america cylinder unvented unvented cylinder usa
    • Replies: 4
    • Forum: USA
  14. C

    Unvented cylinder certificate

    Hi guys I've done my G3 in December as I needed to fit an unvented cylinder in a restaurant. I said to the client to notify BC about the installation. The restaurant is new so BC came around a couple of times for inspection. I said to the owner that they will have to give him the certificate...
    • CP Plumbing
    • Thread
    • america certificate cylinder hot water instalation unvented unvented cylinder usa
    • Replies: 15
    • Forum: USA
  15. D

    Has my hot water cylinder coil broke?

    Hi All, On Thursday there was a water leake a few steets away from us And we had no water most of the day. About 10 minutes before my neigbour said the water supply was back on I remember hearing a fair amount of activity from our airing cupboard. I took this as water/air moving through as the...
  16. P

    Primatic cylinder replacement

    Hi all, i have a primatic cylinder that needs replacing, are we allowed to install new primatic cylinders in this day and age or do i have to install a new vented indirect cylinder. Only asking as i found this quote on a website. If you have one of these tanks, you should seriously consider...
    • Plumb Tidy
    • Thread
    • america cylinder primatic replacement usa
    • Replies: 5
    • Forum: USA
  17. D

    Do I need an unvented hot water cylinder?

    Hi there, we are due to have a new shower room built in a loft conversion. We are a family of 5, with one existing bathroom. Will we need to have an unvented hot water system installed to enable the 2 showers to run successfully at the same time? Pressure and flow at house is 2 bars/18 litres...
  18. B

    Vented or Unvented Cylinder

    Hello Would you recommend a vented or unvented cylinder? I have an indirect vented system at the moment. The flow rate from the upstairs taps is low. We are having solar thermal installed and thus the cylinder will be changed. We can have a new vented or unvented cylinder installed. What...
    • blueplanet
    • Thread
    • america cylinder unvented unvented cylinder usa vented
    • Replies: 2
    • Forum: USA
  19. C

    Boiler wattage for use with unvented cylinder

    Hi The gas boiler is getting old and so at some point will need to be replaced and I am trying to calculate what size it needs to be for best efficiency. The system is zoned with Zone 1 being 15KW of radiators, Zone 2 being 10KW of radiators, Zone 3 being a Centerstore Solar 300L unvented hot...
  20. P

    Unvented cylinder inspection

    Hi Lads/lasses just wanted some advice on unvented cylinder inspection. I just took on what seems to be a contract for a block of flats all with direct heating via immersion. The way they have been installed seems a bit off as there is no check valve on the supply to the cylinder. It goes, Stop...
    • Plumb Tidy
    • Thread
    • america cylinder inspection unvented unvented cylinder usa
    • Replies: 20
    • Forum: USA
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Plumbers' Talk
Tiling Forums UK
Tiling Advice
Tilers Forums UK
Tilers Forum
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock