Copper and zinc have rice material made of composite material.It is produced by precise processing in molding and CNC machines in molds. MS58 FAF brand rice valves produced from quality rice.It has high durability and impact resistance at low temperature. The valves are suitable for line installation on the pipeline, the main purpose is to open and close the flow in distribution systems. Recommended for open / closed applications. It complies with natural gas standards and is approved by Gazmer. The body pressure class is in PN 16 standard. In high temperature pressure tests, it should not be used in gas lines on mob 5 (5 bar).