... :Normal Grade 2.5 3.Certification:ISO9001:2008 4.Certificate Of Utility Model Patent CNG Water Proof Pressure Gauge For Auto namematerialCaseSUS304 stainless ... range:From 0 to 400bar/psi,or 0-40Mpa/psi 5.Installation:Bottom connection, Back connection .6.Thread:BSP,NPT, ... kpa, mpa, bar, kg/cm2) available12.QC/QA:professional QA13.Water proof13.Instruction:when the voltage between 175bar and 200bar the ...