Boleimu Valves

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Concentric Flanged Telescopic Butterfly Valve

Short Description:

  • Nominal Size: NPS 2"~NPS 80"
  • Pressure Class: ANSI Class 125-150LB, JIS 5K, 10K
  • Operating Temperature: -40℃~+150℃
  • Design Standard: API 609
  • End Connection: Flanged
  • Operation: Handwheel, Worm Gear, Pneumatic Piston, Electric, Hydraulic Actuator
  • Body / Bonnet Material: QT450, WCB, CF8/CF8M, LCB/LCC, A890 4A, A890 5A, A890 6A and Monel.
  • Lining Material: Natural Rubber (NR), Neoprene (CR), Nitrile Rubber (NBR), EPDM, Fluoro Rubber (FKM).
  • Test Standard: API 598, AWWA C504 ,EN593
  • Product Detail

    Product Tags

    Product Description

    1. Concentric Flange Type Expansion Butterfly Valve adds expansion compensation structure based on ordinary flanged concentric butterfly valve.

    2. It absorbs axial displacement caused by pipeline thermal expansion and contraction, reducing pipeline stress.

    3. Rubber resilient sealing structure achieves bidirectional zero leakage.

    4. Widely used in water supply and drainage and municipal pipelines to compensate pipeline thermal deformation.

    Features & Benefits

    1. Provides axial expansion compensation to protect valve and pipeline flanges.

    2. Bidirectional resilient sealing with zero leakage.

    3. Flanged connection for stable installation.

    4. Expansion limiting structure prevents over travel pull out.

    5. Concentric structure delivers low operating torque.

    6. Suitable for long distance exposed municipal pipelines.


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