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.
Ahead of their SSE SWALEC Bowl Final clash with Taffs Well at Principality Stadium on Sunday, Burry Port share their #FABXV nomination with WRUTV in the search for Welsh rugby's greatest volunteers. Everyone can get involved by sending nominations via twitter to @WRU_Community using the hashtag #FABXV
Cardiff Blues prop Gethin Jenkins and Ospreys centre Ben John look ahead to the first game at Principality Stadium in Saturday's double header which is promising to be a special occasion for all Welsh fans.
Carmarthen Quins Director of Rugby Ian Jones and committee member Jeff Thomas along with Llandovery chairman Handel Davies look ahead to Sunday's SSE SWALEC Cup showdown where both teams are out to prove 'West is best'
SWALEC ambassador Shane WIlliams is looking forward to Sunday's Finals Day where the Cup, Bowl and Plate offers a great opportunity for players and teams to experience the magic of playing at Principality Stadium
Carmarthen Quins coach Richard Kelly believes it is an exciting time to be part of the Scarlets region as his side take on local rivals Llandovery in the SSE Swalec Cup final on Sunday, as WRU TV's Graeme Gillespie discovers
Scarlets long serving prop Phil John talks to WRU TV's Graeme Gillespie about Judgement Day IV and SSE Swalec Cup finals day. The last time Llandovery were in the cup final in 2007, the Drovers claimed the spoils with Phil playing a major role in the engine room.
Meet Aberdare coach Luke Thomas whose #FABXV nomination goes to super volunteer Daz with a whopping 10 things he does for the club each week, all except the ironing! You can also join in the search for Welsh rugby's greatest volunteers, by sending your nomination via twitter to @WRU_Community using the hashtag #FABXV
SSE Swalec Cup kings Pontypridd travelled to Swansea, fully expecting a return to their second home but Llandovery had other ideas as they also sought victory in the semi-final to earn the right to play the final at Principality Stadium