Welded Bi-Directional Triple Offset Butterfly Valve

Built for operators who cannot compromise on sealing performance, Audco Italiana's welded bi-directional triple offset butterfly valve delivers certified metal-to-metal sealing in both flow directions. Its fully welded seamless steel body removes the leakage risks inherent to cast valve construction. A floating-seat principle, borrowed from trunnion-mounted ball valve technology, keeps sealing performance consistent even under reverse differential pressure. Low operating torque and smooth actuation combine with a long service life to keep maintenance demands down. This is Audco's answer for plants where reliability is a specification, not a preference.

The bi-directional triple offset butterfly valve with a fully welded body is engineered for pipeline isolation and flow regulation in demanding industrial environments. Unlike conventional metal-seated butterfly valves, this Audco design combines a triple-offset configuration with a floating-seat mechanism typically found in trunnion-mounted ball valves, enabling full-rated-pressure sealing performance regardless of flow direction.

The valve body is fabricated by welding together formed seamless steel pipe sections, a manufacturing process that eliminates the casting porosity and material defects associated with traditional cast steel or cast iron valve bodies. The result is a significant reduction in the risk of external leakage over the valve's operating life — a decisive advantage for engineers specifying a high-pressure butterfly valve for continuous, heavy-duty service.

Unlike standard triple offset butterfly valves, which are typically rated for unidirectional sealing, this bi-directional metal-seated valve maintains full sealing integrity even when the pressure differential reverses. This capability is especially relevant in plants where flow direction can change depending on operating conditions or process phase, a common scenario across petrochemical facilities, distribution networks, and power generation plants.

This welded industrial butterfly valve is suited to a broad range of sectors: oil & gas, chemical processing, power generation, metallurgy, pulp and paper, water supply, and district heating networks. Wherever operators need a dependable pipeline isolation valve with low maintenance requirements and reduced operating torque, this design meets demanding technical specifications while keeping opening and closing operations smooth and efficient.

- Bi-directional metal-to-metal sealing at full rated pressure

- Welded seamless steel body: no casting porosity risk

- Triple offset design with floating-seat principle

- Low operating torque and smooth actuation

- Long service life even under severe operating conditions

- Suitable for oil, chemical, power generation, metallurgy, paper, water and heating industries