Description
The high-performance butterfly valve has excellent sealing properties and a tight shut-off.
The disk is an off-centre portion of a ball, and the seating function of this valve is identical to that of a ball valve.
The disk and seats of the valve are offset from the shaft axis and it is not necessary to seal the shaft in this valve.
Many valves have a main seat made of durable plastic and a secondary metal seal making them “fire-safe.”
High-performance butterfly valves are produced in pressure groups as high as ANSI 900 and could be used in applications involving a tight shut-off.
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