Ordering Description Product number Description: Victor Medium Duty G Series, Single Stage, G250 Regulator, 150-540, Oxygen Product number: 0781-9400 Description: Victor Medium Duty G Series, Single Stage, G250 Regulator, 60-510 LP, L.P. Product number: 0781-9410 Description: Victor Medium Duty G Series, Single Stage, G250 Reglator, 15-510, Acetylene Product number: 0781-9405 Description: Victor Medium Duty G Series, Single Stage, G250 Regulator, 15-300, Acetylene Product number: 0781-9406