Here we go - Retains existing 12mm pipe diameter (and probably some are the very same parts in the flo kits - cost me £13 total (although I already had one of the hose connectors - but they are two a penny at the markets anyway) I have lined them up but sorry pic is a bit blurry - you should be able to work out the parts. The bit of pipe is standard plastic 15mm as is the push fit at the top