Thanks for the Review. The 4 bar Oxygen Regulator is ideal for Low Pressure Lead Welding, so I'm surprised by your comment. When you adjust pressure, ensure your torch valve is open 1/2 a turn and adjust the Regulator SLOWLY. Lead Welding Nozzles are very small, so pressure adjustment to the Regulator takes a few seconds to be reflected on the Gauge, so make a small adjustment, then wait for the pressure to stabilize before making further adjustment.
If you're still struggling, give me a call, ideally while your at the equipment.
Regards
Graham - Customer Support