Leaking cartridge triton

2009 shower code 86001940 on casing -possibly a TRITON DART - was leaking at centre spindle, so I stripped cartridge and replaced spindle 'O' rings and leak fixed - but now shower leaks at outlet port when flow control turned off with humming noise (I can not see a problem with the cartridge it operates OK ) - any ideas why cartridge 83310120 passes ?
Asked 10 years ago by Anonymous
http://www.showerdoc.com/triton-thermostatic-cartridge-83310120

These cartridges are according to the manufacturer a non serviceable item, and therefore designed to be replaced if a fault occurs.

Answered 10 years ago by Anonymous

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