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Industrial thermowell

Product picture Vanstone thermowell TT511 ©Endress+Hauser
Product picture Vanstone thermowell TT511 global ©Endress+Hauser

For Oil & Gas applications. Vanstone type, design with collar flange

It is a specially designed thermowell for thermometer installation. The thermowell shaft and the process connection flange are not interconnected. For installation, the collar of the thermowell is fitted between two flanges; on the one hand it is fitted onto the thermowell and on the other hand it is bolted to the connection nozzle on the process side. Many different flange versions are available to secure the unit to the permanently installed nozzle flange. It is machined from solid bar stock.

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  • Benefits

    • Solid thermowell, made of drilled bar stock material.

    • Fulfillment of various, industry specific requirements with a standard product. Flexible selection of immersion length and thermowell geometry according to the process specifications.

    • In accordance...

  • Field of application

    The thermowell will be used in applications with high process requirements. The predominant industries are Oil & Gas and Petrochemical. The process connection flange is not welded on the thermowell stem but designed as collar flange. This special...

Features and specifications



  • Measuring principle

    Bar stock Thermowell

  • Characteristic / Application

    metric style

    Vanstone type

    with collar flange

  • Head connection


    1/2" NPT

    without connection

  • Maximum standard immersion length

    500 mm (19,69")

  • Max. immersion length on request

    500 mm (19,69")

  • Process connection

    Collar flange

    ASME 1 1/2" 150

    ASME 1 1/2" 300

    ASME 1 1/2" 400

    ASME 1 1/2" 600

    ASME 1 1/2" 900

    ASME 1 1/2" 1500

    ASME 2" 150

    ASME 2" 300

    ASME 2" 400

    ASME 2" 600

    ASME 2" 900

    ASME 2" 1500

    DN25 PN40

    DN25 PN100

    DN50 PN40
    DN50 PN63

    DN50 PN160

    DN80 PN40

  • Thermowell root diameter

    30 mm (1,18")

    20 mm (0,79")

  • Medium contact material

    1.4401 (316)

    1.4571 (316Ti)

  • Wetted part finishing (Ra)

    <= 1,6 µm (63.00µin)

    <= 0,8 µm (31.50 µin) or roughened to Ra=6 (0.24µm)

  • Tip shape

    conical or tapered

  • Temperature range

    -200…700°C (-328…1.292 °F)

  • Max. process pressure (static)

    depending on process connection up to 2500 lbs

  • Max. process pressure at 400 °C

    depends on process connection

Documents / Manuals / Software

Accessories / Spare parts

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