Design Standard: JIS F7372-1996 Test Standard: JIS 7400-1996 Hydraulic Test Pressure: Body- 1.05Mpa, Seat-0.77Mpa~0.4Mpa Flange size as per JIS B2220 - 5K Main Material: 1-Body: Cast Iron (FC200) 2-Bonnet: Cast Iron (FC200) 3-Disc: Bronze (BC6) or Stainless Steel 4-Seat: Bronze (BC6) or Stainless Steel 5-Gasket: non-asbestos