Full Port Brass Ball Valve

Full Port Brass Ball Valve

A full port brass ball valve has an over-sized ball so that the hole in the ball is the same size as the pipeline leading to lower friction loss. Flow is unrestricted but the valve is larger and more expensive so this is only used where free flow is required. Besides, the valve is made up of brass.

Brass is any alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. In comparison, bronze is principally an alloy of copper and tin. Despite this distinction some types of brasses are called bronzes and vice-versa. Brass is used for applications where low friction is required. Beacuse 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 resistant to corrosion. As we all know , alloy has better abilities than the metals that form it, brass has higher malleability than copper and zinc. The low melting point of brass and its flow characteristics make it a easy material to cast. However, 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.