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pipework

  1. D

    Undersized gas pipework

    Hi. I was horrified to come across an installation where two 28 combis and a 15kw cooker are fed off 22mm pipework all, the way from the meter. One of the combis and the cooker are within 3 meters of the gas meter. The other is some 35 meters away and has 22mm copper to it. Needless to say there...
  2. H

    Insulation for copper pipework

    Hi there! I'm new to the forum posting for the first time :smiley2: Just wondering what the current 'best practice' is regarding insulation of copper pipes in a bathrooms... Refurbishing our shower room and the pipes leading to the shower valve (via Hans Grohe universal 'i-box') are chased into...
  3. B

    Subfloor pipework

    Good afternoon all, I have commenced an extension to my house and as part of this includes the main bathroom. The proposed floor construction make up is 150mm type 1, DPM, 150mm concrete, 150mm Insulation, and 70mm Screed. I plan to have all the subfloor pipework popups in-situ prior to...
  4. L

    Solid fuel boiler pipework

    Theoretically, a solid fuel boiler would have min 28mm flow and return to cylinder. Would the hot water draw off/vent pipe also need to be m i n 28mm..??
  5. K

    All pipework replaced - still little to no heating downstairs

    Hi, Yesterday we had all the pipework for our central heating replaced, as we were having an issue with the rads downstairs not working (after a recent rad replacement and power flush). When the guys left yesterday all the rads were working - we had full heat in all rads - boiling hot! We had...
  6. G

    Commercial Gas Pipework

    Hi Guys Just looked at quoting a new gas pipe extention. The leg that needs extending terminates in 3" steel (welded). I only need to carry on the pipe in 2" which i can screw. But to do this I will need a 3" flange or reducer welding to the existing run. Does anyone know what type of welder i...
  7. A

    Who can install underground pipework for an LPG bottle install?

    I'm client's PM for a new house build by a German kit house company. No gas supply to the house as heating is by ASHP. Client wants a gas hob, which will be the only gas applicance in the house. I have suggested using LPG bottles - 2 19Kg bottles on an auto changeover valve (plus UPSO?) should...
  8. J

    Chasing pipework up behind radiators.

    I'm installing a fully new combi oil central heating system and don't want the pipework to the rads showing through the floors. I've chased the walls up from the floors to a height of 8 inches and fixed single back boxes. The bottom of these will be about 2 inches above the bottom of the...
  9. W

    Retro fitting bar mixer to 15mm compression shower pipework

    Can you use this type of kit to replace a shower valve connected by 15mm copper tails with compression nuts with a bar mixer? I know they're a good way to leave feeds ready for a bar mixer but hadn't thought of them being used this way. Can't think of a reason why not? Unless the tiles were...
  10. C

    Hot water re-circulation pipework

    Hi. Is there any alternative for hot water re-circulation pipework. I know hep2o and speedfit will not allow it but is there anything else other then copper? Thanks Luke
  11. M

    what pressure and for how long should you test copper pipework for?

    As the title?
  12. J

    Pipework Banging when boiler gets up to temperature?

    My pipework on my central heating system (taxi duo etc) keeps banging when the boiler gets up to temperature. I have bleed all radiators but didn't seem to do anything? any help will be much apperaticed
  13. L

    Identifying central heating pipework.

    I have a question about a job I am currently doing which is causing a few problems at the moment, a job I am at where they are bit by bit renovating a fairly large house, it has had its boiler removed (Vaillant not that its relevant) and there are 4 cut pipes in the ceiling space (no gas this...
  14. U

    Identifying central heating pipework that has been cut and left unmarked.

    Hello, I have a question about a job I am currently doing which is causing a few problems at the moment, a job I am at where they are bit by bit renovating a fairly large house has had its boiler removed (Vaillant not that its relevant) and there are 4 cut pipes in the ceiling space which...
  15. 1

    kinked, crimped and coiled 8mm pipework

    Hi, I'm after a little advice. I am working my way through a renovation of my central heating system prior to new carpets being fitted in the next few months and an unvented cylinder conversion from my current vented being fitted in the next year or so - this will be moved from the 1st floor...
  16. H

    10mm to 15mm pipework

    Hi, We've just moved into a property built in 1978 and all the radiators have 10mm copper pipework with the return and flow both at the same end. I'm intending to replace all the radiators in the house using 15mm but can't really do this in one go! As I decorate each room would it be ok just to...
  17. R

    consealing central heating pipework within a duct in a concreate floor

    Am installing a new central heating system (building never had heating before) in my 1960/70's bungalow with a concrete floor and wish to minimize the visible pipe runs to the radiators. The majority of the pipework is in the loft with drops for each of the rooms in 15mm copper, where...
  18. T

    Question: The purpose of actuators on heating pipework.

    I am currently installing four radiators as a favour for a friend in an office building of 3 floors – the rads are required on the ground floor. The heat for the building comes from three boilers connected in series. (All hot water is provided by several multipoint water heaters). Three branches...
  19. C

    feed and vent pipework improvements

    hi, i've had someone look at my heating system recently and he wants to combine the feed and vent pipes to help eliminate the air and other problems i have been experiencing over the last year following a boiler and pump upgrade. he also wants to remove the vent. arm above the F and E tank which...
  20. V

    Leaking Pipework under floor

    Morning all , I could do with some advice please . We were asked to find a leak in a sealed system . Big 2 story house . Oil boiler , about 24 radiators . Has been gradually loosing pressure for about a year . We went there yesterday and isolated the top floor , and dug down and...

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