Make less noise when switching around this water outlet (8)
I believe the answer is:
downpipe
'switching around this water outlet' is the definition.
The definition suggests a singular noun which matches the answer.
'make less noise when' is the wordplay.
I cannot quite understand how this works, but
'make' could be 'do' (do can mean to make or prepare) and 'do' is found in the answer.
'when' could be 'e' (I've seen this in other clues) and 'e' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for downpipe that I've seen is " that falls into gutter".)