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In science and engineering, the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quantity-per-quantity measures, they are pure numbers with no associated units of measurement. Commonly used are parts-per-million (ppm, 10−6), parts-per-billion (ppb, 10−9), parts-per-trillion (ppt, 10−12) and parts-per-quadrillion (ppq, 10−15). This notation is not part of the International System of Units (SI) system and its meaning is ambiguous.

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  1. J

    Obsolete parts worcester combi 35 cdi

    Hi everyone, I have been searching the Web for a spare part for a Worcester 35 cdi ng boiler that is obsolete. I can't find one anywhere and its looking more and more likely I'm doomed . The part is the door extrusion seal 87161031280. I have sold my house STC and this has just happened , so...
  2. J

    Combi boiler obsolete part dilemma

    Hi everyone, I have been searching the Web for a spare part for a Worcester 35 cdi ng boiler that is obsolete. I can't find one anywhere and its looking more and more likely I'm doomed . The part is the door extrusion seal 87161031280. I have sold my house STC and this has just happened , so...
  3. P

    How fix new fill valve plastic part?

    Hi, one of the two hooks on my toilet Torbeck fill valve has broken, and so the float can't connect. I've bought a new fill valve, however it's incredibly difficult to access underneath and replace the whole valve. I therefore just want to replace the plastic part that has the two hooks...
  4. C

    what is this part called ? reillo g3b oil pump

    got new oil and tried to start my reillo g3b oil burner ,when it idnt fire and went to lockout i bleed the pump and check the nozzle ,and eventually took apart the pump to find lots of black oil slug around the oil pump.so i cleaned all the stuff of and cleaned through the pump and the only...
  5. Prof Yaffle

    Combi boiler losing pressure - No leaks, many new parts, but still...

    I'll pop this into the general advice forum as it seems the most active, but mods - feel free to move if there's somewhere more appropriate. Thank you! --- Apologies, but yet another "boiler losing pressure" thread - I've read many others, but am no closer... Not my boiler (parents), so...
  6. T

    Thermostatic shower part question

    Hi, First time post so apologies in advance if this is not in the correct part if the forum. I’ve got a Thermostatic shower where the cartridges have ceased up and the fascia has some scale / wear and tear and I’m looking to replace it. For the life of me I cannot find any info or branding on...
  7. simlock

    Looking for help with replcement part Grohe

    Hi, just wondering if anybody can help looking for a replacement part for my Grohe shower controls here is a picture of what i have but can't seem to find this part anywhere, any help would be fantastic, thank you..
  8. S

    Spare part to fix Vokera boiler error code E040

    Hi - can anyone suggest the spare part need to rectify the E040 water transducer fault on a Vokera boiler? The error message states to top up water pressure but WP is fine. Thanks.
  9. L

    Where can i get spare spindle parts for bastow taps?

    HI folks, hoping to pick your brains. My bathrooms have Bastow tapware in federation style. House was built 1997, so these are 25 years old now. The spindle has a screw on shaft, that I assume lets them have just one type of spindle and then change the shaft for different colours - gold in my...
  10. I

    New build heating Zoning part L

    Hi , recently moved into a DWH Barrett home , 3 bed house . The heating is zoned but in one bedroom only upstairs with the other bedrooms controlled by downstairs . Totally pointless system . Have contacted NHBC building control who signed this off and investigating as i feel they are not in...
  11. P

    Daryl or jog let part 204292

    Neil. Did you solve the problem with your Daryl 204292 part - I have exactly the same problem. Thanks
  12. B

    Macdee Metro 3 part syphon 10.5"

    Hello, I need to source the above for my old high level cast iron bell cistern & don't seem able to see any long enough to sit on the internal shelf, whilst reaching through to the flush pipe. Also need a replacement for the side entry valve. Any help appreciated.
  13. R

    Any ideas on what this part is??

    Had a plumber in whilst I was on holiday to fix a leaking condensate pipe on system boiler but have noticed he’s also fitted something on my unvented cylinder on the return secondary circuit. I’ve circled the part on the two pics. Anybody got any idea of what this is? Plumber not returning any...
  14. E

    Rayburn 480K B serial no R0073699 need part number R3781 - Air Fan.

    I have a Rayburn 480K B serial no R0073699 and desperately trying to get part number R3781 - Air Fan. Waited 9 months for Rayburn to get back with availability.
  15. J

    Is it normal for a shower parts to need replacing after 4 years?

    We've recently had to replace a tap which had a persistent drip and now need to replace a shower as it has water coming out the fittings and is very hard to turn off. We know that these fittings are only 4 years old, is it normal for these issues to arise after this time period or could this be...
  16. K

    Heatslave common parts

    Hi all, can anyone confirm to me what the difference is between a heatslave 15/19 and 20/25 physically? So the reason for the question is if I bought a second hand 20/25, could I strip it down and use most of the parts as spares on my 15/19. From what I can gather, heat exchanger plate, pump...
  17. T

    Need parts for a Termobac valve

    Hi, an American here with a bum termobac valve plumbed in a safety gravity loop for a vented wood boiler. The valve can be opened and repaired. Can you point me to a dealer who stocks parts for a 2012ish 32mm female thread version? Thanks and regards. Todd
  18. G

    boiler locks out , complete service and parts change

    problem with my oil boiler everything has been change all cleaned out set up but still locks out , if I remove photcell and shine a light on it it runs fine replace photocell and it stops again , new cell and control box, heating engineer is beat now as well
  19. M

    Not plumbing but a parts-related question!

    I'm looking for a shop/store to buy spare A/C parts in Lewisham. I'm looking for a compressor and electric board, if anyone knows of where to get them please let me know
  20. T

    Bathroom sink faucet part

    Hello. My bathroom sink faucet is leaking and I would like to replace the hot ceramic disc stem cartridge (Sepco watermark 15) . I was able to remove the 2 connected parts (IMG_4132). About a couple years ago, I was able to separate the stem cartridge (IMG_4133) and unknown part (IMG_4134) on...
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