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Butterfly valves

These are largely on-off valves, although they are sometimes used as regulators. The on-off system is operated by a butterfly-shaped disc, linked to a lever or catch. Just like ball-valves, they are very quick to operate with a 90º rotation. They have the great advantage of taking up very little space. They are generally used in plumbing with diameters starting from 2 ½?.

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Butterfly valves