Standard Flanged Barstock Thermowell
Temperature / Thermowells / TW421 TW422 TW423

Standard Flanged Barstock Thermowell Picture
  • Solid Barstock and Forgings, welded and machined.
  • ASME B16.5 Flange Standards
  • Stepped, Tapered and Straight stem profiles.
  • Raised Face, Flat Face, and Ring Type Joint
  • Standard bores for 6mm, .250 and .375 diameter probes.
  • CRN available on all models.

These flanged thermowells are made from solid barstock stems welded to forged flanges and machined. Full penetration welds are available on all sizes, and all models are available with CRN.

Flange sealing face profiles are available as Raised Face, Flat Face, and Ring Type Joint. RF type sealing faces have a surface finish of 125-250 u-in Ra (3.2-6.3 u-m) for better sealing againts Gaskets.

Stepped, Tapered and Straight stem profiles are available. Custom dimensions can be supplied on request.

Click on the pictures to view details

Stepped stems have a thick robust main stem section with the last 2.5 inches of the stem having a diameter of .50
TW421 Flanged Stepped Barstock-Forging Welded and Machined

Stepped stems have a thick robust main stem section with the last 2.5 inches of the stem having a diameter of .50" to reduce thermal lag offer better time response.

TW422 Flanged Tapered Barstock-Forging Welded and Machined

Tapered stems start off at a large root diameter and tapper down to the tip diameter. This design has a higher natural frequency making them more appropriate for systems with extreme dynamic conditions such as process lines with media flowing at high velocity.

Tapered stems start off at a large root diameter and tapper down to the tip diameter. This design has a higher natural frequency making them more appropriate for systems with extreme dynamic conditions such as process lines with media flowing at high velocity.
Straight stems have a large uniform diameter uo to the Tip. The heavy wall on the entire length of the stem gives them longer service life. They are also well suited for the uniform application of protective coatings or used with protective tantalum sleeves.
TW423 Flanged Straight Barstock-Forging Welded and Machined

Straight stems have a large uniform diameter uo to the Tip. The heavy wall on the entire length of the stem gives them longer service life. They are also well suited for the uniform application of protective coatings or used with protective tantalum sleeves.



  • Model Number

  • 1
    Sealing Face

  • 2
    Bore Size / Stem

  • 3
    Thermowell Material

  • 4
    Insertion Length 'U'

  • 5
    Lag Extension Length 'T'

  • 6
    NPS (DN) Size / Class

  • 7
    Instrument Connection

  • 8
    Face Surface Finish

  • 9
    Options


  • Comments / Specifications

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