Sean Emery, Gavin Heck and Cleris James all went over as Newbridge were forced to work hard at home for their victory over Waunarlwydd for whom Simon Hart crossed twice.
Beddau had a far easier time of it at struggling Fleur De Lys where they ran in six tries, five of which were converted, in their 40-0 rout.
But neither could close the gap on leaders Bonymaen who returned to winning ways to stay four points clear at the top of the table.
Bonymaen slipped to only their third defeat of the campaign last week with a shock reverse at relegation threatened Builth Wells.
But they shook off that disappointment to get back in the driving seat with a commanding 38-17 success against Merthyr. Wing Lyndon Johnson scored two of their five tries while fly-half Gareth Jones added 13 points with the boot.
Assistant coach Ieuan Jones said: "It was important to get back on track after the defeat at Builth. We've still got the other teams breathing down our necks but we have games in hand and we know that our destiny is in our own hands.
"Perhaps a bit of complacency crept in last week but it was a good kick and now if we win our games then we know the title is ours.
"We made hard work of it against Merthyr. After a good start we allowed them to get back into the game but we finished strongly."
At the other end of the table, Ystrad Rhondda looked to be heading to a rare victory when they lead at half-time against Llangennech through tries from Alun Roberts and Richard Wells before the visitors rallied to run out 27-13 winners.
Whitland played the last ten minutes of their clash against Uwic with just 13 men after forwards Ryan Mitchell and Randall Williams were sent to the sin bin but managed to hold on for a 29-17 win.
Gareth Edwards and Justin James scored the crucial tries for Llanharan who edged out Caerphilly 18-7 in a nail-biting encounter at the Dairy Field while Cwmllynfell came from behind to beat Blackwood 20-7 after trailing at half-time.
After two years in the international wilderness, Adi Taviner is hoping to make up for lost time when she takes part in her second Women's Rugby World Cup which kicks off in Paris next Friday where Wales take on hosts, France.
The WRU's Women and Girls legacy events - #TRY OUR GAME have proved popular this week with current players and newcomers to the game learning new skills and picking up tips from national squad players.
We caught up with Shona and Ellie from the Wales women team ahead of the start of the Women's Rugby World Cup in Paris next month at a recent women's training session to encourage and promote more women and girls to try their hand at rugby. #tryourgame
The Women's Rugby World Cup warm-up clash between Wales and USA proved bittersweet for centre Elen Evans. Despite being one of the star performers on the day on her 50th Test appearance, USA edged home 10-7 at Cross Keys.
Wales completed their Junior World Championship campaign with a victory over Samoa. Team manager Mark Taylor and No 8 James Benjamin reflect on a tournament which saw Wales win three games and lose two.