Electricity, I know, but when faced with a plumbing situation like yours, I zoom down to B&Q and stalk round 'till I see one of those older employees they are so rightly proud of and pounce: Those old guys know everything - one of them slashed the cost of my study work surface by two thirds with the one piece of lateral thinking.
To quote Harry Enfield: You don't want to do that, you want to do this! and they're generally right.

- I assure you that I have no connection with B & Q -

You might find something here, if you can't get to the store!