The Mecco triple eccentric butterfly valve features bidirectional zero leakage and low torque. The metal-seated sealing structure makes it suitable for various harsh operating conditions. Its eccentric design ensures that the sealing pair disengages instantly upon opening, minimizing seat friction and significantly extending valve service life. It also provides inherent fire-safe characteristics. The Mecco triple eccentric butterfly valve adopts an eccentric design and complies with API 609 standards.