Quality is designed into the Series 42 (wafer) and 44 (lug) butterfly valves, utilizing the phenolic-backed cartridge seat pioneered by Crane.

 
  • 系列42(平板)和系列44(吊耳)蝶阀贯彻“质量第一”设计原则,采用美国克雷恩首创的酚醛制成的衬套阀座。
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