Eccentric semi-ball valves by Audco Italiana function like conventional ball valves but feature a C-shaped half-ball that rotates on dual planes via an eccentric shaft for sealing against a fixed seat.
Technical Description
These valves excel in cutting off, distributing, or redirecting media flow in pipelines, with a 90-degree rotation enabling open-close operations while minimizing friction between the spherical cap and seat.
Composed of a body, eccentric shaft, bonnet, spherical cap, axle sleeve, and seat, the design incorporates eccentricity between the cap's centerline and valve runner. This allows separation when open—preventing contact—and precise seating only at closure, reducing wear. The floating seat self-aligns for optimal sealing, and hard seals between components suit high-temperature, high-pressure conditions up to 160°C and 16MPa.
Standards include API6D/GB/T 12237 for design, ANSI B16.5 flanges, sizes from 1"-40", and compatibility with liquids, oils, slurries, slag particles, or air using WCB material. Modular construction supports manual, pneumatic, hydraulic, or electric actuation per ISO5211.
Double-eccentric hemispheres ensure reliable sealing, low torque, instantaneous release, and longevity even with granular media under harsh conditions. The structure cuts mechanical abrasion, enhances service life, and allows bidirectional flow without medium interference.
Ideal for petroleum, chemical, metallurgy, steel, power, textile, paper, and sewage sectors, especially low-pressure lines handling erosive particles or gases at moderate temperatures. Audco Italiana serves as a trusted source for these high-performance valves.
Ideal for petroleum, chemical, metallurgy, steel, power, textile, paper, and sewage sectors, especially low-pressure lines handling erosive particles or gases at moderate temperatures.
Audco Italiana serves as a trusted source for these high-performance valves contact us for quick quote.
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