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Three eccentric butterfly valve features and applications (2)
In the context of valve performance, leakage is often categorized into two types: seat leakage (internal) and packing leakage (external). Traditionally, much attention has been given to internal leakage, while external leakage—particularly from the packing area—has been overlooked. However, in today’s environmentally conscious world, it is a well-established fact that external leakage poses a far greater risk than internal leakage. This is especially true when dealing with hazardous or toxic media.
The Tritec three-eccentric butterfly valve is a high-performance rotary valve that requires only a 90-degree rotation for operation. Unlike gate valves or globe valves, which involve multi-turn stem movements, the Tritec design minimizes wear on the packing section. The valve is engineered with advanced sealing technology, including high-quality packing seals, to ensure exceptional leak-tightness. According to the EPA 21 specification, its external leakage rate is guaranteed to be below 100 ppm. In real-world testing, some units have even achieved as low as 7 ppm, as confirmed by Lloyd’s monitoring.
These performance metrics make the Tritec butterfly valve ideal for use in critical applications involving toxic and corrosive media, such as in the chemical industry. Its versatility extends across a wide range of industries, including oil and gas, petrochemicals, power generation, and more.
The Tritec three-eccentric butterfly valve represents the latest advancement in valve technology. It addresses the limitations of traditional valves, offering improved reliability, durability, and sealing performance. With pressure ratings up to 2,500 psi and nominal sizes up to 48 inches, it can be customized with various flange types, including weld-end, lug, flanged, and ring-type connections. The material selection is also highly flexible, allowing it to perform effectively under extreme temperatures and in aggressive environments, such as those involving acids or alkalis.
In particular, the Tritec valve's zero-leakage capability makes it an excellent replacement for gate valves and ball valves in large-diameter applications. Additionally, its superior flow control characteristics make it a preferred choice for control valves, gradually replacing larger and less efficient globe valves.
To date, Tritec valves have been widely adopted in critical industrial processes, including China's oil and gas exploration, offshore platforms, refining, petrochemicals, inorganic chemicals, and energy generation. Their growing popularity among engineers and designers underscores their value as a reliable and high-performance solution in demanding environments.