Low-pressure gas welding regulator, single stage, Oxygen style: 0-50 P.S.I adjustment range. UL listed comes with CGA540 tank inlet mount. Has type"A" hose outlet fittings and Type "B" conversion is offered, select below. Brass construction with precision diaphragm for accurate pressure flow adjustment. The low pressure regulator is different from the standard big box store cutting torch kit in that the regulators in those kits will not adjust in a accurate way much below 6-7 PSI. Where, a true low pressure regulator will adjust in the 2 PSI range without any inner cone pulse. The real key to controlling thre heat effective zone in thin gauge steel & aluminum. A must for thin gauge sheet welding in low carbon steel or auminum materials . Regulator is standard in our DTGW1000 & DT-GW1000DLX master kits. 3-year warranty.