Brass Valve uses brass as the main raw material and is processed by hot forging and forming process. Its valve body side holes are refined by rolling process to ensure the valve stem does not leak and improve the coefficient. The connection between the bonnet and the valve body adopts permanent sealing method. Copper alloy has better electrical conductivity, thermal conductivity and corrosion resistance, while having higher strength and wear resistance. Brass is a copper alloy with zinc as the main alloying element. According to the chemical composition, brass is divided into two types: ordinary brass and special brass.