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15mm

The EF8–15mm f/4L FISHEYE USM is a fisheye zoom lens for Canon digital single-lens reflex cameras (DSLRs) with an EF lens mount. It delivers 180° diagonal angle of view images for all EOS SLR cameras with imaging formats ranging from full-frame to APS-C, and provides 180° circular fisheye images for full-frame EOS models. Announced by Canon in 2010, it features UD glass for suppression of chromatic aberration and a subwavelength coating for reduced ghosting. It has full-time manual focus for instant switching from AF to Manual operation.

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  1. T

    How to tighten 15mm Flexible Tap Hose Adaptor

    This is going to sound stupid - but it is giving me problems. I have fitted new flexible tap hoses that each connects with a tap hose adaptor to give the recommended flat surface to connect to an isolator. All good except I cannot tighten the flexible hose hex nut without twisting the hose...
  2. M

    2 part reducing sets 10mm to 15mm??

    Do any of you guys use this type of reducer? It doesn’t have an olive and the bottom part of the brass compresses onto the pipe by the looks of it and the top is removable. I haven’t used them before tbh. I can only seem to find the 3 part versions by me.
  3. G

    installing a wet ufh system from a 15mm CH leg

    HI folks, is it possible/feasible/reasonable to insatll an ufh manifold and system (for a 17m2 room) from a disused CH 15mm flow and return? I would install a 15 to 22mm reducer into a pump then a 2 port manifold then into the floor then. back into the return of the manifold. Its an old...
  4. M

    Left a piece of cloth inside 15mm pipe

    So I think I've made a really stupid mistake. I stuffed a bit of rag into the pipe end to stop drips while I was preparing to solder. Then I put the new fitting on and soldered it. I didn't realise and tested the heating which worked but then got a low flow on the boiler. It was then I realised...
  5. J

    How much solder for 15mm pipe?

    Hi All, I hope you are doing well. I have this 3.25mm lead-free grade 99c solder wire. I know that the good practice to bend the wire before soldering so you know exactly how much it is absorbed by the flux. I know too little isn't good and too much is as bad. I need to connect two 15mm pipes...
  6. P

    Water meter readings 22mm vs 15mm?

    Good day My question is concenrning a system where the main water meter is on a 22mm water line, this line is then split to 15mm lines. Will the 22mm line water meter have a larger reading over the 15mm line water meter?
  7. A

    12 x 1.6mm MLC to 15mm copper connection

    Hi will be using 12x1.6mm MLC for a project and would like to terminate into a fitting other than an UFH manifold, eg, regular 15mm copper. Can't seem to find a coupler for that - any ideas out there? cheers Andy
  8. A

    How to convert a 15mm tap tail to a 3/8" fitting

    Hi, I am trying to fit a replacement tap to a mini-sink that's built in to the top of a toilet. The original tap isn't made any more by the manufacturers - the nearest equivalent is apparently this one: GoodHome Lazu 1 lever Mini Contemporary Basin Mono mixer Tap | DIY at B&Q -...
  9. S

    15mm isolation valve

    Hi. I have to replace the taps on a small sink. Currently the tails fit onto the hot and cold-water supplies into a female end fitting. I want to add isolation valves to both supplies but all these seem to come with compression ends. My question is - can I just remove the compression bits (the...
    • Stu Thompson
    • Thread
    • 15mm isolation valve
    • Replies: 2
    • Forum: DIY Plumbing Forum
  10. D

    Justifying the 'Rules of thumb' for 15mm and 22mm CH pipes

    Hi All, I'm trying to work out why the 'rule of thumb' is ~3 radiators on a single 15mm run... I've calculated the heat demand of my house at ~14kW: 3 bed 1930s solid wall, end terrace, no wall insulation 7 radiators 2 air change per hour for all rooms 21deg in all rooms When I do the...
  11. A

    TMV valve under bath with 22mm hot water and 15mm cold water mains

    The bath taps have 22mm inlets currently the cold water mains 15mm is fixed to the tap by a copper adapter 15mm to 22mm. The hot water is 22mm gravity fed. Is it ok to add a 15mm T to the cold water pipe and then add 22ml adaptor to the T to connect to a 22m TMV . I cannot find any TMValves...
  12. O

    Tee 15mm pipes from 15mm pipes for CH

    Hi all, I need to fit a new rad but the location of it has an obstruction. I initially wanted to tee from the 22mm pipes but right beside them and in between my new rad and the 22mm pipes are two 15mm pipes heading to another rad. I'm a DIY'er and trying to keep my joints to a minimum, I'm...
  13. E

    Rad not geting warm but no air in rad

    Hi I have conected a small rad with 15mm pipe fed from 10mm system there is no air in the read water is coming out no bubbles but rad don't get warm the rad its conected to dos get hot the 15mm pipes have to go up and over a small door and back down to the new rad what am I doing rong please
  14. mjtefc

    10mm not 15mm cold water to fridge

    Divy here thought his cold water feed was 15mm.. so bought a 15mm - 1/4" reducing tee to plumb a fridge. It's 10mm!! I've already cut it so stuck a stop end on. What options do I have as I can't find a 10mm - 1/4" reducing tee... Do I get some 15mm pipe and use 15mm - 10mm reducers ?
  15. J

    How to tap off a 15mm compression to 1/2?

    While I am a trained engineer I appear blind when it comes to plumbing fittings. I want to tee off the 15mm compression (copper pipe to flex hose) to loo so as to supply a cold water bidet. The bidet is suppplied via a 1/2 connection. So appears simple, a tee but cannot find - any suggestions...
  16. J

    Why hot water copper pipe is 22mm and cold is 15mm?

    Hi All, I have this silly question. Water pressure for hot water is a bit low while cold water has a decent pressure. Why do they put 22mm copper pipes for hot water? It seems detrimental for already low pressure. Best regards
  17. D

    Slight damage to 15mm Hep2 barrier pipe querry

    Hi All fitting 15mm Hep2 barrier pipe for central heating, Ive spotted a small rub on a pipe. Like it been caught with a tool of some kind. I can feel it with my finger, about quarter of a mm deep. Will I get away with it, or should I strip out. I want to keep an un-broken feed. It will end up...
  18. D

    Hep20 15mm exit from behind plasterboard advice

    Hi All Im using Hep2o 15mm for the first time. I would like to exit behind the radiator at the midpoint. Whats the best exit back box fitting to use? Single gang metal electrical back box is too small. The Hep back box appears only for 10mm pipe. Open to suggestions. I want to fit the radiator...
  19. R

    15mm gas supply to new 30kW system boiler - OK?

    As part of our house refurb I had the boiler replaced and a pressurised hot water cylinder fitted. Builder's CH people used Glowworm Energy 7 30S system boiler, and mounted it very neatly above the cylinder. I was a bit surprised to see it piped in 15mm from the 22mm that comes through the...
  20. C

    10mm to 15mm adapter

    Hello, I'm relatively new to plumbing had a career change at the start of lockdown and worked with a plumber for a month and now I'm tackling stuff alone and sort of learning from my mistakes. Today, I'm fitting a new TRV and lockshield onto microbore using a 10mm to 15mm adapter, I cut the old...
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