Put pressure on liquid in cartons (9)

I believe the answer is:

constrain

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'put pressure' is the definition.
'constrain' can be an answer for 'pressure' (thesaurus). I'm not sure about the 'put' bit.

'liquid in cartons' is the wordplay.
'liquid' indicates anagramming the letters.
'in'+'cartons'='incartons'
'incartons' anagrammed gives 'CONSTRAIN'.

'on' acts as a link.

Can you help me to learn more?

(Other definitions for constrain that I've seen before include "Compel - limit" , "Severely restrict" , "Restrict scope of (an activity)" , "Compel towards a course of action" , "Confine, limit" .)

I've seen this clue in the Sydney Morning Herald.

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