Design Standard: JIS F7371-1996 Test Standard: JIS 7400-1996 Hydraulic Test Pressure: Body-1.05Mpa, Seat-0.77Mpaï½?0.4M Flange size as per JIS B2220 - 5K Main Material: 1.Body: Bronze (BC6) 2.Bonnet: Bronze (BC6) 3.Disc: Bronze (BC6) 4.Seat: Bronze (BC6) 5.Gasket: non-asbestos