Features
Double offset design of the valve disc and stem minimizes the wear of the valve seat and the friction of the sealing ring, and ensures bidirectional airtight closing and sealing within the entire pressure range with zero leakage; the unique two-piece seat design allows the valve seat to be fixed flexibly, quickly and accurately regardless where the valve disc is positioned. The valve seat is self-adjustable to adapt to the temperature changes and wearing condition. This high performance double offset butterfly valve features solid and reliable, good cut-off performance, pressure and temperature resistance, easy maintenance, long service life. It is suitable for being used on waterway and pipelines as regulating and throttling equipment.
Technical Parameters
-- Nominal diameter: DN65～DN1500
-- Pressure: ASME Class 150, 300 and 600
-- Service temperature:-29℃～260℃
-- Valve body design: Wafer type, lug type and double flange type
-- Valve body material: carbon steel, stainless steel and nickel aluminum copper alloy
Lectotype
-- S40, S4A, S40/41, S42/43, S44/45
English
143-143
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