Abstract
A high-pressure spray nozzle assembly ( 10 ) has a nozzle body ( 20 ) and nozzle cap ( 30 ), which are operatively coupled and co-operatively house a retainer ( 40 ) having a clasp ( 42 ) for retaining wear components ( 50 ). The nozzle cap ( 30 ) has an open-stepped detent ( 32 ) formed in relief on an internal peripheral surface of the nozzle cap ( 30 ), which operatively permits sealing of the retainer ( 40 ) against the nozzle cap ( 30 ) as a consequence of hydraulic pressure applied by fluid delivered through the spray nozzle assembly ( 10 ).