Electric Hard-Sealed Flanged Butterfly Valve
Electric-actuated double-eccentric butterfly valve with metal hard seat for high-temperature and abrasive service.
Inquire NowProduct Overview
The double-eccentric hard-seal flanged butterfly valve combines a metal-to-metal sealing surface with a robust electric actuator, ideal for steam, hot oil, fly ash, and mining slurry service. The disc-hardened seat design ensures long service life under severe abrasive and thermal cycling conditions.
Available in sizes from DN50 to DN1200 with carbon steel, stainless steel, or special alloy bodies, the valve offers reliable bidirectional shutoff (zero leakage) and proportional control with optional 4-20 mA positioner.
Key Features
- Metal Hard Seat: Stellite-overlaid seat surface withstands 425°C and abrasion
- Double Eccentric: Disc lifts off seat on opening, eliminating seat wear
- Bidirectional Seal: Zero leakage shutoff from either flow direction
- Heavy-Duty Actuator: Multi-turn or quarter-turn electric actuator with torque limiter
- Replaceable Seat: Field-replaceable seat ring minimizes maintenance downtime
Technical Highlights
Typical Applications
Steam distribution, thermal power, mining slurry, cement preheater, FGD systems, metallurgy dust removal.
产品概述
双偏心硬密封法兰蝶阀采用金属对金属密封面，配套重型电动执行器，特别适用于蒸汽、热电、粉煤灰、矿浆等严苛工况。硬化阀座与蝶板设计可在磨蚀性强、温度循环大的环境中保持长寿命。
提供DN50~DN1200多种口径，阀体可选碳钢、不锈钢或特殊合金；可实现双向零泄漏切断，配合4-20mA定位器可执行比例调节。
核心特点
- 金属硬阀座： 司太立堆焊阀座面，耐425℃高温和磨蚀
- 双偏心结构： 开启瞬间蝶板脱离阀座，避免阀座磨损
- 双向密封： 两个流向均能实现零泄漏关断
- 重型电动执行器： 多回转或角行程电动执行器带力矩限制
- 可更换阀座： 阀座圈现场可更换，减少维护停机时间
技术参数
典型应用
蒸汽分配、热电、矿山矿浆、水泥预热器、脱硫系统、冶金除尘。