An injury time try from replacement flanker Robert Carter saw Bedwas secure a narrow 22-16 win over Carmarthen Quins.
Both sides started quickly, Carmarthen's James Dixon giving his side an early lead with a penalty before Richard Powell levelled things up with.
Powell should have increased the Bedwas lead after eight minutes. A quickly taken Bedwas tap penalty was illegally stopped by No 8 Andy Thomas who was despatched to the sin bin for not retreating 10 metres but Powell's kick into the wind went wide.
Both sides' defences were working hard and good pressure from the visitors saw Dixon slot a further penalty. Bedwas prop Dan Preece was then sin binned but Dixon's penalty went wide. Neither side could find space for a try and although Dixon added a further penalty goal, the half petered out with neither side looking like crossing the white wash.
With the wind behind them for the second period, two Powell penalties saw the home side level before a third penalty on the hour saw Bedwas ahead for the first time.
Carmarthen hit back when pressure eventually saw the Bedwas line broken and Rheon James crossed under the posts with Dixon adding the conversion.
But Carmarthen were caught offside from the restart and Powell added the penalty to reduce the arrears to 15-16. At this stage a Bedwas win looked unlikely.
But Carter, who was introduced in the 79th minute, latched onto a great pass from skipper Phill Sargent and galloped away from the covering defence to score with his first touch. Powell added the conversion to push his side further clear.
There was still time for Carmarthen to try to win the game but their attempts to run the ball from two late penalties were countered by the Bedwas defence.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series