... 1. We are the professional manufacturer of the valve 2. Superior quality and competitive price; 3. In ... 1989 End Flange: JB79 Fire Safe: API 607 th 1993 Inspection & Testing: GB/T13927-1992Specifications: Nominal pressurePn1 ... .6,2.5,4.0,6.4mpaStrength testing pressurePt2.4, ... )0.6Seat testing pressure(high pressure)1.8,2.8,4.4,7.1Applicable mediumQ 71F -(16 ...