DelVal Butterfly Valves

DelVal TriO Triple Offset Valves
Wafer, Lug, Double Flanged and Butt Weld Ends

Standards and Specifications

DelVal TriO® Triple Offset Valves are designed and manufactured to meet the requirements of the following industry standards:


  • Design

    API 609, ASME B16.34

  • Face to Face

    API 609, ASME B16.10, ISO 5752, BS EN 558

  • Testing

    API 598, ISO 5208

  • Pressure Temperature

    ASME B16.34

  • Flange Accommodation

    ASME B16.5, ASME B16.47, BS EN 1092-1

  • Butt Weld Ends

    ASME B16.25

  • NACE

    ANSI / ASME MR 0175 / ISO 15156-1

  • Fire Safe Certified

    API 607

  • Fugitive Emission

    ISO 15848

  • Compliance

    PED 2014 / 68/EU

  • Body Style

    Wafer, Lug, Double Flanged (short/long pattern), and Butt Weld End

  • Rating

    Class 150 to class 600

  • Temp Range *

    -29C to 425°C (Standard)
    -196C to 700°C (Optional)

  • Size Range **

    DN80 to DN2000