Cap an overflow pipe

Discussion in 'Off Topic / Chit-Chat' started by dean, 21 Nov 2019.

  1. dean

    dean Member

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    Hi all
    I have a job to cap off some pipe but the manufacturer Flowplast doesn’t make a cap
    - But why would any normal person cap an overflow pipe

    So I have to make something

    It has to be quick to do so the tank can be filled
    Plus neat and tidy as it can be seen

    All suggestions welcome


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  2. Andrew Butler

    Andrew Butler Member

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    As are suggestions of size, colour and purpose ;)
    I'll assume it's 21.5mm and in that case products do exist but as you know Floplast don't make them.
    being for an overflow pipe I think is a very valid question!

    You MAY find this as a way around things if you're going to glue it; use a 1/2" cap - if you've never used imperial PVC / Schedule 40 then just trust me - you should see in the info that it's external diameter is infact 21.4mm so if the fitting doesn't slide on then you might just have to sand either the inside of the stop end or outside of the pipe.
    info for white cap and pipe
    info for grey cap and pipe

    any questions or if links have failed then let me know, update us of how it goes.
    Andrew
     
  3. dean

    dean Member

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    Andrew
    Thank you for the information
    Although I’m 52 I’m strictly a metric man

    The grey cap states it’s compatible with solvent weld pipe but it doesn’t say so on the white
    So can I use the white and use solvent weld glue ?


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  4. ian_m

    ian_m Global Moderator Staff Member

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    You fit a solvent weld 21.5mm overflow pipe to 32mm waste adapter which then takes a solvent weld 32mm end cap. This is what I did with my overflow pipes when the toilet suite was changed. Before this I just taped up with aluminium tape, but not so tidy.
     
  5. Andrew Butler

    Andrew Butler Member

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    well the 1/2" (12.7mm) pipe is not talking about the external diameter as your 21.5mm overflow pipe is, that might explain what I'm meaning more clearly or confuse you further!

    So, I've just seen this is off topic and not aquarium related which I hadn't before. Without knowing the details it's hard to suggest the best way of rectifying things and why you would want to blank an overflow off. There are ways but not neat and tidy to my knowledge as @ian_m says. Can you not blank it at source or replace a tee for an elbow?
     
  6. dean

    dean Member

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    Hi
    Sorry guys I didn’t make it clear
    The pipes are on a tank system in a shop

    The T are glued in place onto the tank connectors there is no visible pipe between the two fittings so it would mean replacing all the pipe work and tank connectors and they don’t want to do that

    They just want half the the pipes removing and so the T stays attached to the tank connector and I want to cut through a joint between the T and an elbow ( again no visible pipe ) and cap it off

    So basically I need to blank off a piece of pipe that is glued into a T piece and is cut flush with the end of the T

    The things you do to help friends out




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  7. Andrew Butler

    Andrew Butler Member

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    I'm unsure of this but I think schedule 40 works in a similar way to the more heavy duty PVC pipes which I've always glued this using a product called tangit (brand name) only I'm unsure whether they would fuse and which type of glue required - have you thought about calling plastic pipe shop? If this isn't possible then read on :bookworm: ...................

    I don't think such a product exists for 21.5mm overflow pipe which would leave things looking neat (aside from the schedule 40 option) and chasing your tail to find something when for the minimal cost of fittings you could just do things easy enough.
    If it's not too much trouble to change a tank connector then I'd opt for this method if you're after making things look neat and at a guess sub £10 in materials.

    If I understand things correctly then you would need:
    - 2x tank connectors
    - 2x 90 degree elbows
    - 2x unions
    - short amount of pipe you could probably salvage

    Maybe one better? - flo plast make a 90 degree tank connector which turns 4 fittings into 2

    Let us know how things go :sorry:
     
    dean likes this.

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