flanged brass ball valve

flanged brass ball valve

A flanged brass ball valve is a ball valve that has a flange for its connection part and the main material is brass. As a result, it absolutely inherits the features of them.

Pipes can be assembled or disassembled easily, by using flanges. Flange ball valve form many extremely robust and reliable valves for use with corrosive chemical such as strong acid and alkalies, and surpass stainless steel ball valves and lined steel in most cases involving sulphuric acid at ambient temperature. High flow rate, combined erosion and accidental dilution affect ball valve far less than stainless steel valves. The absence of visible metal parts eliminates all external corrosion.

Brass is the alloy of copper and zinc, and the proportions of zinc and copper can be varied to create many brasses with varying properties. Brass is used for applications where low friction is required. As it is softer than most other metals in general use, brass is often used in situations where it is important that sparks not be struck, as in fittings and tools around explosive gases. It is ususlly relatively resistant to tarnishing. Brass has higher malleability than copper or zinc. The relatively low melting point of brass (900 to 940°C, depending on composition) and its flow characteristics make it a relatively easy material to cast. By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. Brass is susceptible to stress corrosion cracking, especially from ammonia or substances containing or releasing ammonia. The problem is season cracking that is caused by high residual stresses from cold forming of the cases during manufacture, together with chemical attack from traces of ammonia in the atmosphere.