Concentric Butterfly Valve

Product Overview

ZT concentric Butterfly valves are widely used in various industrial fluid control applications. The fully rubber-encapsulated body is suitable for various corrosive service conditions. Compared with conventional gate, globe and ball valves, the weight is much lower. Due to the rapid development of artificial rubbers it is possible to use this valve within the modern chemical industry.ZT Butterfly valves with concentric type design comply to API609 standard.


  • Size range(s)
    NPS 2 ¨C 72
    Pressure rating
    ANSI125~150;PN6~16

Features and benefits

  • Design Features
    End connection: Wafer, Lug, RF
    Operation: Lever, Gear,Pneumatic,Electric, Hydraulic

  • Design Standard
    Design & manufacture according to API 609, AWWA C504, ASME B16.34
    Face-to-face according to API 609, ASME B16.10
    End Connection according to ASME B16.5 (RF, RTJ), ASME B16.47 (RF,RTJ), MSS SP-44 (NPS 22 Only), ASME B16.25 (BW), AWWA A207
    Test & inspection according to API 598

  • Product Catalogs
    API 609 Butterfly Valve
    Document code: ZT-BUV-2022

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