The touchdowns took Vokes’ try tally for the season to 15 with Newbridge averaging four per match in an unbeaten campaign with the Division One East title firmly in their sights and a Ben Francis Cup final clash with Bedwas looming.
It was Division One north pace-setters Nant Conwy first defeat of the season. They had opened the scoring with a penalty from captain and centre Caron Davies.
But Newbridge controlled proceedings and piled on the pressure with Conwy requiring a brilliant try saving tackle from winger Carwyn Davies and a turnover from No 8 Carwyn Ellis to hold them out.
Newbridge eventually scored their first try of the afternoon, when a lineout move down the blindside saw Vokes dot the ball down in a corner.
But Davies put over a second penalty as Conwy re-took the lead nine minutes before the interval. However, the sin-binning of locks Aron Jones and Carwyn Roberts told as the penalties mounted with Newbridge applying pressure in the 22.
Newbridge took the lead for a second time when Vokes went over from short-range following several penalties and a period of pressure. Full-back Eamonn Rees added the simple conversion to give them a 12-6 advantage at the break.
Rees extended it to nine points with a penalty early in the second half. Nant Conwy’s ill-discipline was starting to hurt them in the second half with Newbridge openside flanker Luke Morgan and tighthead Jordan Reames-Williams winning turnovers at the start of the second half.
Newbridge thought they had added a third try with wing Sam Watkins crossing in the corner but the pass in the build-up, from outside centre Jonny Paynter, was deemed to have gone forward.
Eventually they got their third try with hooker Vokes rumbling over for his hat-trick. Rees added the conversion to give them a 22-6 lead.
Newbridge added a fourth when referee Aaron Parry awarding a penalty try following a dominant set of scrums.
Nant Conwy got a consolation try with replacement Anthony Kirkham powering over from close range with Caron Davies converting but it wasn’t enough as Newbridge claimed the spoils to secure their biggest prize since winning the unofficial Welsh Clubs’ title in 1965.
Newbridge: E Rees; C Jones, J Paynter, M McGovern, S Watkins; S Veall, M Davies (capt); M Kavanagh, S Vokes, J Reames-Williams, L Ford, J Duffy, G McDonnell, L Morgan, M Preece.
Subs: J Gilbert, G Young, S Evans, Z Stuart, M Jefferies, J Bennett, L Birch-Perry, R Turley.
Tries: Vokes (3), pen try; cons: Rees (2); pen: Rees
Nant Conwy: S Pringle; R Jones, G Jones, Caron Davies (capt), Carwyn Davies; E Fon, G Dafydd; D Davies, R ap Gwyndaf, I Pyrs, C Roberts, A Jones, G Vaughan, B Dafydd, C Ellis.
Subs: A Kirkham, S Metcalfe, D Williams, I Williams, T Taylor, Cai Jones, Carwyn Jones, Ifan Jones.