Design Standard: JIS F7313-1996 Test Standard: JIS 7400-1996 Hydraulic Test Pressure: Body- 5.00Mpa, Seat-3.67Mpa Flange size as per JIS B2220 - 20K Main Material: Body: Cast Steel (SC480) Bonnet: Cast Steel (SC480) Packing Gland: Bronze (BC6) or Stainless Steel (2Cr13) Stem: C3771BD (Brass) or SUS403 Seat: Bronze (BC6) or Stainless Steel (2Cr13, SCS2) Disc: Bronze (BC6) or Stainless Steel (2Cr13, SCS2) Gasket: non-asbestos