Valleys second grade side forced their way into the final with a seven-wicket thrashing of Canowindra Services on Saturday.
Coupled with Morongla's loss to Lyndhurst, Valleys moved into fourth with the win and will face minor premier Cavaliers in the first week of the finals.
On Saturday though, Canowindra services won the toss and elected to bat first.
Valleys' opening bowlers gave their side a fantastic start, with Darren Nurcombe removing Pat Kennedy in the third over.
Spearheaded by Justin Gunn, the Valleys bowlers then ran through Canowindra's order, with wickets falling regularly.
Kain Trayhurn was the only batsman to offer any resistance making a stubborn 14.
Gunn finished with figures of 4-15 off his eight overs, while Nurcombe claimed 3-15.
Steve McDowell cleaned up the tail taking 2-3, including a ball that broke one stump in half.
Valleys' fielding matched their bowling effort, with Will Ingram taking a screamer at second slip to dismiss Jacob Devlin and Tarun Penukonda hanging on to a great catch at square leg.
Canowindra ended up with a meagre total of 43.
In reply, Valleys were in early trouble at 3-17, with Nick Delaney removing Camps (0), Penukonda (0) and Ingram (9). Ingram was dismissed by an excellent catch from young Matt McLean.
However, Nurcombe (15 not out) and Joel Mewburn (16 not out) managed to see Valleys over the line in a very important win.
Delaney was the best of the Canowindra bowlers, finishing with 3-16 off six overs.
Matt Devlin bowled without luck, ending with 0-28.