In extreme operating conditions such as petrochemical, power metallurgy, high temperature and high pressure, the sealing reliability and condition adaptability of valves directly determine system safety and operational efficiency. OUWEI Metal-to-Metal Hard Seated Butterfly Valve, with metal-to-metal sealing technology as the core, relies on precision structural design and top-tier material selection to become the preferred fluid control solution for harsh working environments.
Adopting a triple-eccentric sealing structure, the multi-eccentric design between the valve stem, sealing surface and pipeline center achieves zero-friction contact during opening and closing. Equipped with Stellite 6 or tungsten carbide coated sealing surfaces with a hardness of over HRC 70, the wear resistance against particles is less than 0.01mm/year, perfectly suitable for media containing impurities such as coal slurry and slag. The valve body is made of high-quality materials including WCB cast steel, 316L stainless steel or Hastelloy, with a temperature resistance range of -196℃ to 650℃ and a maximum pressure rating of PN420, easily handling extreme conditions such as liquid nitrogen, high-temperature steam and highly corrosive media.
The sealing performance meets the ANSI Class VI zero-leakage standard, complying with API 607 fire-safe specifications and ISO 5211 stem blowout prevention design. The bidirectional pressure-bearing structure supports free switching of medium flow direction, allowing ±2° pipeline flange deviation during installation to adapt to complex on-site conditions. Combined with various types of actuators such as pneumatic and electric, it supports 4-20mA signal remote control. The operating torque is only 30% of that of traditional hard-seated valves, significantly reducing energy consumption. The durability of 100,000 trouble-free opening and closing cycles far exceeds the industry average.
As a powerful brand deeply rooted in the fluid control field, OUWEI ensures full-chain stable supply through intelligent production lines and can provide customized solutions according to operating condition requirements. From material selection to structural optimization, it fully meets the stringent requirements of high-end scenarios such as chemical hydrocracking, nuclear power steam systems and LNG regasification. Choosing OUWEI Metal-to-Metal Hard Seated Butterfly Valve means choosing ultimate sealing, long-term stability and professional guarantee, enabling fluid control to remain calm and reliable even in extreme environments.
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