The body of the FBC breeching is made of cast iron to meet the specifications of IS: 210 Gr. FG200. It is equipped with a stainless steel 304 non-return valve. The flange size is # P.C.D - 180 mm, O.D - 220 mm, and I.D - 100 mm. There are 8 holes with a diameter of 19 mm each.