supply of single stage lpg regulator & multi pressure regulator , single stage lpg regulator with adopter (ball valve forged, vertically mounted) conforming to specification is: 6901-2009 (iso 2503-1998) deta iled specification: (1) max inlet pressure 25 bar. (2) outlet pressure 0-4 bar (3) inlet connection 0.860 x 1/4 inches lh. (4) outlet connection g 3/8 inches lh. ( 5) no. of gauges - 02. guarantee: 12 months? replacement guarantee against manufacturing defect valid authorized dealership certificate / test certificate fro m the oem. provision for flash back arrestor has to be included on regulator side. make gce unicontrol model no. 0783979 / messer tornado model part no. m s77053941 / esab / swc / hmp makes only with isi mark. one number sample to be approve before bulk supply bse brand isi marked. [ warranty pe riod: 12 months after the date of delivery ] ] , multi pressure regulator for oxygen gas cylinders,class 3 with inlet pressure of 230 bars & maximum flow of 1000 ltrs./mi n. conforming to is:6901-2009 (second revision) with stainless steel diaphragm at 1st stage & neoprene rubber diaphragm at 2nd stage & inlet with ceramic filters isi marked [ warranty period: 12 months after the date of delivery ] ]