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size

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  1. S

    Estimated size calorifier

    Hi, what estimated size calorifier would be needed for a 5200 square meter college building.
  2. L

    First fix pipe size?

    Hi, I'm about to pipe up my upstairs cold water to sinks and showers. It's a large 4 bed house, stopcock in the kitchen, middle of house outside wall, presently with 25mm pipe into a tap for building water. So upstairs sinks and showers are piped with tails hanging down in 15mm JG speedfit...
  3. Reddwarf4ever

    Bore size for a shower hose with a Fully pumped supply

    this may sound a basic question, but it is important. I have seen so many conflicting opinions, even from manufacturers. Some say, just use the biggest bore possible, others say use a small bore 8mm for a fully pumped system & a large bore 11mm for a gravity system. There must be a reason why...
  4. K

    LPG injector size?

    Maybe I'm being a bit lazy but can anyone help me with the output of jets/nozzles by size on LPG at around 30mb? Its not thrilling but I'm looking at some redneck style testing on campervan ventilation requirements (BS EN 721 clause 6, if anyone's as bored as me).
  5. N

    How to size a boiler

    Just doing my ACS and I was hoping the course taught you how to correctly size a boiler. Turns out it doesn’t, just wondering how you guys size a boiler whether it’s be system, heat only or combi
  6. B

    Where can I get two rads like this? Unusual size!

    Hi All, I need to replace two radiators in on of my rooms. The size does not seem to be available from normal suppliers. I think it is an imperial size 32 wide by 16" high. I need to replace as they are not in great condition around the threads. You might see the corrosion in the image I will...
  7. M

    What size pipe for shower mixer

    Hi there! First post, so go easy on me. Please could I have some advice? I’m over-thinking something and it seems the type of HW system has a bearing on what size pipe is best for certain applications, so what better place to ask this question than a plumber’s forum? I have an unvented HW...
  8. M

    Tilbrook Radiator size

    In a bathroom which measures 2.53 sqm with a height of 2.66 m, which 2000 mm tall Tilbrook radiator would you suggest would be required? Using a combi boiler system with central heating temperature of 60 C...
  9. B

    Boiler gas pipe inlet size

    Hello, The old Baxi Potterton Promax 24HE heat only, installed when the house was built in 2003, is on its last legs. I've decided to replace it and after some research I've bought a Viessmann Vitodens WB1B316 (part no. 7416307) 13kW heat only boiler. The downsizing of the boiler is not a...
    • badluc
    • Thread
    • boiler gas engineer pipe size
    • Replies: 5
    • Forum: Boilers
  10. C

    What size immersion for 117L 900 x 450 cylinder?

    So i'm a 4th year apprentice doing gas repairs and servicing, don't really get involved in cylinders too much unless changing a 3port or something because at my company the plumbing department change all cylinders I've got a private job of changing the above cylinder due to it leaking in...
  11. L

    What size multifuel stove,?

    What size multifuel stove should be in a room that measures 5.5 x 4 x 2.5m It is a new build, so 6 inch cavity and about a ft insulation on ceiling. From calculators online I've got anywhere from 2.2kw to 4. I currently have a boru carraig mor 20kw which is supposed to be putting out 4 to the...
  12. F

    Die Size For Pipe Threading

    Hi. I'm Fred. I'm putting in a new electric service, 100 A/240 V. I need to manually thread a 1 1/4" pipe Nominal Pipe Size (NPS). I'm not sure if it is tapered or not tapered. My question is: what size die do I need to threat the pipe? The outer diameter (OD) of this pipe is 1.9". Is that...
  13. J

    Alcove off fireplace - size of air vent?

    So the fireplace will be turned into an alcove where we can add a nice vase and light as a centrepiece as we have had the olf gas fire removed. We shouldn't block the fireplace up as it can lead to condensation so what size hit n miss air vent should I add to the top of the alcove. It will be...
  14. F

    Motor bearing size required for old style electro oil burner

    I attended a lock out on a 40 year old Myson with an electro oil burner.Old style with orange fan housing.End dog was destroyed due to worn bearings.I replaced both bearings but one was the smaller type.Unfortunately i used my last one and forget the size as i need to order more. Not very common...
  15. G

    boiler install gas pipe size

    I need a new boiler and would prefer a 35KW combi boiler but wanted to know if my existing gas pipe will allow it. I wanted to check this first so i can look at my boiler options before getting somebody around. I don't have any other gas appliances and my existing pipe is 22mm. The gas meter is...
    • g35brit
    • Thread
    • boiler gas engineer install pipe size
    • Replies: 16
    • Forum: Boilers
  16. S

    What make of Direct Unvented Cylinder, and what size?

    Hi, some professional advice would be greatly appreciated, We are having an Unvented Cylinder installed into our 2 bedroom ground floor flat. I have had a few quotes and been given lots of differing advice, this always makes me wary, especially having suffered a history of poor quality work by...
  17. A

    Bathroom Tap bore size

    Will be fitting a central bath mixer on the bath and would like some advice on the fittings to use. I have existing 15mm speedfit that I have currently blanked off. As the taps will be central mounted then it will be difficult to gain access so will need to fit taps prior to fitting to back...
  18. T

    What size air inlet valve (durgo)?

    Hi, we have had a downstairs toilet and utility room built and I need to plumb in the toilet including a Durgo. The branch has a toilet, 2 sinks, a washing machine and dishwasher running into it. What airflow would I need and does it need to be on a full 110mm pipe? We have a dedicated 110mm...
  19. Stants

    Unvented Cylinder size ? ( Evocyl )

    Hi all I'm having New heating set up installed in a loft conversion the Cylinder ( unvented ) and Boiler are being sited in a cupboard within the loft space ( adjacent to the new stairs ) im a bit tight on space Height and width as I am trying not encroach on the bedroom as much as is possible...
  20. R

    Basin waste size help

    Hello. I am in the process of trying to replace the Unslotted basin waste on the hand basins in my bathroom, but am a little confused with the sizing as I have little experience of plumbing. From what I can see the the waste I have removed has a diameter of 40mm but the trap that this screws...
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