• Welcome to PlumbersForums.net - The international free plumbing advice forum. Professional plumbers sharing advice with fellow plumbers and DIY alike. Register for free today! - Checkout the Plumbing Advice forum and then our Plumbing Videos area which still needs populating.


Within industry, piping is a system of pipes used to convey fluids (liquids and gases) from one location to another. The engineering discipline of piping design studies the efficient transport of fluid.Industrial process piping (and accompanying in-line components) can be manufactured from wood, fiberglass, glass, steel, aluminum, plastic, copper, and concrete. The in-line components, known as fittings, valves, and other devices, typically sense and control the pressure, flow rate and temperature of the transmitted fluid, and usually are included in the field of piping design (or piping engineering), though the sensors and automatic controlling devices may alternatively be treated as part of instrumentation and control design. Piping systems are documented in piping and instrumentation diagrams (P&IDs). If necessary, pipes can be cleaned by the tube cleaning process.
Piping sometimes refers to piping design, the detailed specification of the physical piping layout within a process plant or commercial building. In earlier days, this was sometimes called drafting, technical drawing, engineering drawing, and design, but is today commonly performed by designers that have learned to use automated computer-aided drawing or computer-aided design (CAD) software.
Plumbing is a piping system with which most people are familiar, as it constitutes the form of fluid transportation that is used to provide potable water and fuels to their homes and businesses. Plumbing pipes also remove waste in the form of sewage, and allow venting of sewage gases to the outdoors. Fire sprinkler systems also use piping, and may transport nonpotable or potable water, or other fire-suppression fluids.
Piping also has many other industrial applications, which are crucial for moving raw and semi-processed fluids for refining into more useful products. Some of the more exotic materials used in pipe construction are Inconel, titanium, chrome-moly and various other steel alloys.

View More On Wikipedia.org
  1. C

    Basin Waste and Piping and Not Aligned - Causing Weeping of Connectors

    In my last posting, I requested assistance in exchanging a waste that had been fitted using silicone, without actually removing the basin. Mission accomplished. However, I now have a further issue for which I would welcome any suggestions or advice. I decided to replace the McAlpine Pedestal...
  2. andycorleone

    Kitchen Piping Tundish problem

    For over a week the kitchen sink is leaking water from what I think is called tundish ( I thought is was called overflow but little google search maybe pointed me to the right name) my guess is the pipe is slightly blocked because this only happens when there is a huge amount of water coming...
  3. A

    Extend copper piping

    Hi, i made the daft decision to fit my own new bathroom - like for like replacement of suite, no moving pipes. i have reached thenpoint kf tiling over my shower pipes to fit my new shower and i think they are too short. They only protrude from the tile around 10-15mm and this needs to be at...
  4. W

    Install boiler piping outside

    Hi there what’s the recommendations( also the type of insulation) for laying pex boiler pipes outside underground. And how do account for expansion over the length of about 15 metres. Thank you.
  5. D

    Loft insulation on piping

    Hi All, I have an unvented cylinder system up in my loft (tank, boiler & piping etc). I have insulated the loft roof (so kinsgpan in the rafters) On our coldest day so far this year the loft temp went down to 9°C, outside was around 0°C. I have many exposed pipes from my boiler system up...
  6. A

    Should I be concerned by this gas piping connection?

    Hi all, The shop below my flat has recently had gas and an external box installed. Two days ago British Gas fitted a meter then yesterday workman started drilling into box and messing with piping. The box door was left open so I had a look and took these photos. Obviously I'm concerned...
  7. J

    Piping rads

    Hi, looking to pipe a new build, oil boiler, multilayer with radiators(low temperature). The home owner hasn't provided me with any plans and although I know how I'd like to pipe I don't want it to be too expensive as they're a young couple. I'd love to feed two Manifolds, upstairs and down...
  8. P

    TBSE on a very long radiator

    I have a 225cm wide, 45cm high radiator on a standard vented, 8mm microbore two-pipe, fully pumped system. I am getting rid of its old twin entry radiator valve to install a trv, so I need to decide where to position it and the lockshield. Easiest option would be TBSE (top-bottom, same end) on...
  9. plumbingdoctor

    What are the right types of pipes to be used in underground piping?

    Hello guys Any thought I installed underground pipes assume any code requirements in installing a pipe when the frost gets deep in winter. I'm using a PVC
  10. S

    Corrosion problem in central heating system with standard plastic piping?

    Five years ago I had a new central heating system installed. The pipework for two of the radiators was done in plastic, running under the floorboards. Although the system was dosed with plenty of Sentinel X100 inhibitor, after about 18 months the water suddenly started to go brown, and I had to...
  11. I

    New radiator installed,piping issue

    Last year i had a new radiator installed in the bedroom,done by a friend who said he knew what he was doing.Anyway recently the radiator has not been getting warm. Could this problem have anything to do with how the radiator has been connected. Please view the attachment to get what i am...
  12. R

    Changed piping - homeboost pump not working?

    Hi all, First-time poster. Today I had some leaky 3/4" pipe changed along with a stopcock to 15mm. On the pipe, directly after the stopcock is a Salamander homeboost pump which has helped massively with the pressure. So the pipework went from 3/4" either side of the pump , to 15mm. After the...
  13. J

    40mm piping - welded parts / coupler / compression question

    Newbie - elemental parts-ordering question here:, relating to the size i need to refer to / compatibility when ordering replacement pipe parts. For 40mm piping (under sink / washing machine arrangement) - see photo 1. For 40mm piping, when ordering welding couplers, welding bends and welding...
  14. C

    Piping to replace Twin Entry Valve

    Hi - I have the (apparently) dreaded twin entry valve radiators. I really would like to get rid of my immersion heater (to make additional room in a new bathroom) so I believe I can't have a combi boiler with these old twin entry valves. So I would like to re-route the outlet valve (that goes to...
  15. milleniumaire

    Nice to have's for new CH piping?

    Having had a chat with my heating engineer this week, and a further chat with a very helpful person at Vaillant support, I'm now feeling confident that the Spirotech Spirocross AX100 LLH is the way to go with my CH enhancements. It's a little pricey but does provide the additional air and dirt...
  16. R

    Combining feed and vent piping from F and E tank

    It would save me a lot of faff if it was acceptable to combine the feed and vent in the manner shown in diagram below. Or should I resort to separate pipes for each, as small sketch. Boiler is Potterton Suprima I would be grateful for your advice. Thanks Rudy
  17. S

    Radiator valve replacement and piping alteration

    Can someone please advise me on the following problem? I have a Worcester CD30 SYSTEM boiler which is connected to the plumbing in an S configuration. Heating is pumped and hot water is pumped via 2 diverter valves. There is a radiator in the upstairs en suite which is part of the hot water...
  18. M

    Piping up bath taps?

    Hi guys. When installing a bath what is the preferred method of piping up the taps? Hard pipe or are people happy to use flexis?
  19. I


    Hello, I have a low pressure system, but it seems I have a high pressure tap. I have amend some of the pipework to the tap anf put a full bore 15mm isolator on pipe to help keep the full flow, but the flex from the mixer are really small in diameter how can I over come this, or do I just need...
  20. D


    Hi, my bathroom fitters installed this plastic pipe as a feed to the new radiator, i'm slight concerned because it is bent over the wooden beam and at a strange angle. We're having a tiled floor so i'd hate for a leak and have to rip up the tiles. Can anyone advise whether this should be cause...
Creating content since 2001. Untold Media is a Registered Trademark.