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  1. #1
    Senior Member Rank = Yonsai Dudley's Avatar
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    Advice on pipe plumbing for a DIY filter.

    Hi

    Can anyone say if Kockney 50mm solvent fittings, slide valve and tank connectors fit the bog standard DIY sheds 50mm solvent pipe, or have Kockney been clever and made it so you have to buy their pipe too?

    Thanks Steve.



  2. #2
    Quote Originally Posted by Dudley View Post
    Hi

    Can anyone say if Kockney 50mm solvent fittings, slide valve and tank connectors fit the bog standard DIY sheds 50mm solvent pipe, or have Kockney been clever and made it so you have to buy their pipe too?

    Thanks Steve.
    I think it's all the same to be honest if not I'm sure some sand paper and solvent weld would fix any issues failing that to be sure a rubber coupling is available for nexus ect will make connection to almost anything just warm ends in hot water and it's pretty forgiving stuff

    Sent from my HTC U11 using Tapatalk

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  4. #3
    You might be surprised at how many different sizes of 50mm pipe there are. Sounds odd but it's true, sometimes different makes have different wall thicknesses or round their figures up or down to the nearest full mm annoyingly.

    Flexi rubber boot connectors are a good option as they tend to fit anything from waste to pressure pipe for the same stated pipe size, also they are easy to get off again for modifications in the future if required.

    Evolution Aqua are a good choice as many on here have recommended them before.

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  6. #4
    Senior Member Rank = Yonsai Dudley's Avatar
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    Quote Originally Posted by Frimley Koi keeper View Post
    You might be surprised at how many different sizes of 50mm pipe there are. Sounds odd but it's true, sometimes different makes have different wall thicknesses or round their figures up or down to the nearest full mm annoyingly.

    Flexi rubber boot connectors are a good option as they tend to fit anything from waste to pressure pipe for the same stated pipe size, also they are easy to get off again for modifications in the future if required.

    Evolution Aqua are a good choice as many on here have recommended them before.
    Thanks Frim. Being in the building game I have come across this with different makes of pipe and that is why I asked. Yeah rubber jubilee connectors will do it but its another fitting to buy, no big deal. I was just hoping someone would say I used Kockney 50mm with Osma 50mm waste pipe.

  7. #5
    Someone may still give you that answer. It's early days still

  8. #6
    Extreme Koi Member Rank = Grand Champion john1's Avatar
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    Hi Steve, kk 1.5ins ball valves fit ok to standard solvent weld but as Frim said maybe better to use rubber boots as easy to disconnect when you change the system as I have found.
    Shop around for rubber boots,e/a used to be the cheapest but on their web site they say contact your dealer.
    John

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  10. #7
    kockney koi fitting all fit standard solvent weld waste pipe

  11. #8
    Are we all talking the same sizes here?

    I've just had a quick look on Coastal Koi and the KK ball valves for waste pipe come in 1.5" & 2" (these are the nearest sizes to 50mm)

    The OD of 1.5" waste pipe is 43mm and the OD of 2" waste pipe is 55mm so 50mm Osma pipe may not fit going by those measurements as I'm guessing that Osma are using the new metric pipe size and 50mm is the OD?

    Dudley is saying 50mm but does he mean 1.5"?

    I only checked Coastal Koi so not 100% sure that KK don't make a 50mm ball valve for waste pipe?

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  14. #10
    Really useful link that one, saved it to my favourites, that should Benin hetecas a sticky

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  16. #11
    I knew there was a difference in sizes but taking into account 50mm is associated with both 1.5" and 2" going by that chart there are 9 different sizes ranging from 40mm to 60.3mm

    I know a lot of it is related to the thickness of the wall of the pipe as the industry standard measurements for water pipes is the internal diameter until the new metric pipe came out and that is measured using the outside diameter, but a 20.3mm difference is massive!!! OK so that is associating 40mm and 50mm with 1.5" plus 50mm with 2" and 2" with 50mm.

    At least with electrical pipe it went metric earlier so it's been measured in mm only since the mid to late 1980s and it has always been an outside diameter measurement,

    So be careful where you go to get your pipe work and if possible take one of your fittings with you to make sure it fits properly.

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