德国WTA截止阀，型号11.9 紧凑型波纹管密封截止阀，波纹管受介质冲洗，结构型式有直通型、Y型或角型结构；连接方式为法兰或对焊，并配有安全备用填料；可提供碳钢1.0619/WCB、不锈钢1.4408/CF8M、低温碳钢1.6220/LCB/LCC和其它特殊材料。 阀门应用 对于那些具有易燃、易爆、易挥发、有毒或腐蚀特性的不同类型介质，必须防止其泄漏到大气中。该阀门设计符合美国联邦排放保护法的规定 德国WTA波纹管截止阀设计特点 •阀杆采用滚压成型的内螺纹，并配备升降式手轮。 •波纹管采用多层不锈钢，受介质冲洗，其设计寿命为10,000次开关循环。 •配备金属上阀座。 •波纹管外采用全尺寸的安全备用填料，由石墨制成。 •不锈钢凸状阀盖垫片，外覆石墨材料，安装在阀盖的榫槽面法兰中。 WTA截止阀 德国WTA®波纹管密封截止阀提供了较高等级的防介质外逸散保护，适用于化工流程工艺，其中包括氯碱、光气和化肥应用。作为全球通过认证的仅有四家制造厂之一，WTA®产品符合新的欧洲氯气标准，它对氯气应用的波纹管密封截止阀作出了严格的规定。该阀门的设计具有全面的安全密封系统，它是由多层波纹管、两段式升降密封阀杆与司太立涂层、锥形阀芯和阀座组成。 WTA® was established in 1978 in Ludwigshafen, Germany, a major European Centre for the Chemical Industries, and is currently located at its facilities in Maxdorf, near Ludwigshafen. At its Maxdorf plant WTA designs, develops and manufactures a full range of high-quality Bellows Sealed Globe Valves, Strainers, Check Valves, Relief Valves, Change-Over Valves and Special Valves meeting stringent specifications required by the Chemical and Petrochemical Industries. WTA’s Bellows Sealed Globe Valves and its wide range of products are extensively specified and in service around the world. WTA is committed to offering its customers high quality products backed by extensive technical knowledge. Quality is WTA’s foremost core value and is supported by flexibility and reliability. WTA® Bellows Sealed Globe Valves provide the highest fugitive emission protection for use in chemical processing including Chlor-Alkali, Phosgene, and Fertilizer applications. One of only four manufacturers globally to claim this distinction, WTA® products meet the new Euro Chlor Standard, which defines demanding specifications for Bellows Sealed Globe Valves used for Chlorine applications. The valve’s design features a full safety sealing system enabled by multiple walled bellows, a sealed two-part rising stem, and a stellite-coated, conically shaped piston and seat.