Design Standard: JIS F7333 Test Standard: JIS 7400-1996 Hydraulic Test Pressure: 5K: Body- 1.05Mpa, Seat-0.77Mpa, 10K: body-2.1Mpa, Seat-1.54Mpa Flange size as per JIS B2220 -5K or 10K Main Material: Body & Bonnet: Cast Iron (FC200) Seat & Disc: Bronze (BC6) or Stainless Steel (SCS2) Stem: Brass (C3771BD) or Stainless Steel (SUS403) Packing Gland: Bronze (BC6) or Stainless Steel (SCS2) Coupling: Bronze or Brass Handwheel: Cast Iron (FC200)