Caution: the sealing surface for the diaphragm on the top flange of the valve body receives special factory preparation to enhance sealing with PTFE diaphragms.
警告：用于阀体法兰上的隔膜的密封面在工厂受到特殊的处理，以强化聚四氟乙烯隔膜的密封性能。
The urethane liner is cast in place to form a continuous liner throughout the entire body, chest, packing chamber and flange face area.
氨基甲酸乙酯衬垫采用定点浇铸工艺，在整个阀体、阀腔、填料腔和法兰面区域表面形成全面连续的覆盖衬垫。
The body and flange are airproofed by shell.
阀体与连接法兰的密封为体盖密封。
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