The Queensland Premier Cricket Kookaburra T20 title was secured by Valley off the back a strong batting effort from captain Andrew Gode, Lachy Pfeffer and Jack Beath before Brisbane Heat quick Mark Steketee and teenage left-arm spinner Zanden Jeh combined to stymie the Wests run chase.
Valley posted an imposing 6-209, with Gode hitting eight sixes and a four in his 64 run knock from 24 balls. Pfeffer scored 40 and Beath scored 37.
Steketee, who belted 18 from 8 balls to wrap up the innings, joined Jeh in taking the new ball with the duo claiming seven wickets between them.
Jeh finished with 3-10 from three overs while Steketee took 4-21 from 3.5 overs as Wests were dismissed for 115, ending their hopes of clinching the limited overs double after earlier winning the One Day competition.
Valley will now be the Queensland representative in the National Premier T20 championships in Adelaide in March. University of Queensland made the Final last year in the inaugural titles that was won by Carlton CC from Melbourne.