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BUTTERFLY VALVE

A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow.

Butterfly valves are easy and fast to open. A 90° rotation of the handle provides a complete closure or opening of the valve. Large Butterfly valves are usually equipped with a so-called gearbox, where the handwheel by gears is connected to the stem. This simplifies the operation of the valve, but at the expense of speed.

Types Of Butterfly Valves:-

  1. Concentric butterfly valves – this type of valve has a resilient rubber seat with a metal disc.
  2. Doubly-eccentric butterfly valves (high-performance butterfly valves or double-offset butterfly valves) – a different type of material is used for seat and disc.
  3. Triply-eccentric butterfly valves (triple-offset butterfly valves) – the seats are either laminated or solid metal seat design.