I Have a regulator similar to this one that has these markings = Model SKR 540R, Serial #DF38180, UL listed 541L, SA-568, Compressed Gas Regulator, Gas Service Regulator, Max Inlet - 3000psig. My question is do you know who makes this regulator ? Will your SR150 replace the one I have? Will you sell the regulatur without the guages? They are very similator in looks. Thank You Jim Hyatt