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Thermowell for Lap Flanges (Solid-Machined) - TW30

Brand: WIKA Instruments Ltd.
Each thermowell is an important component of any temperature measurement point. 

It is used to separate the process from the surrounding area, thus protecting the environment and operating personnel and keeps aggressive media, high pressures and flow rates from the temperature sensor itself and thereby enables the thermometer to be exchanged during operation.
Features
  • Heavy-duty design
  • Solid machined version without welding
  • Possible thermowell forms:
    • Design TW30-A: tapered
    • Design TW30-B: straight
    • Design TW30-C: stepped
  • For lap flanges per ASME B16.5
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Each thermowell is an important component of any temperature measurement point. 

It is used to separate the process from the surrounding area, thus protecting the environment and operating personnel and keeps aggressive media, high pressures and flow rates from the temperature sensor itself and thereby enables the thermometer to be exchanged during operation.
Features
  • Heavy-duty design
  • Solid machined version without welding
  • Possible thermowell forms:
    • Design TW30-A: tapered
    • Design TW30-B: straight
    • Design TW30-C: stepped
  • For lap flanges per ASME B16.5

Specifications

Versions

  • Design TW30-A: tapered
  • Design TW30-B: straight
  • Design TW30-C: stepped

Thermowell Materials

  • Stainless steel 316/316L
  • Stainless steel 304/304L
  • A105
  • Stainless steel 1.4571
  • Alloy C4
  • Alloy C276
  • Alloy 400
  • Materials per ASTM specifications
  • Other materials on request
  • Titan Grade 2

Process Connection

  • 1/2" NPT Male
  • 3/4" NPT Male
  • 1" NPT Male
  • Other threads on request

Anschluss Zum Thermometer

  • Other threads on request
  • 1/2" NPT Female
  • G ½ female

Bore Size

  • Ø 8.5 mm [0.355 in]
  • Ø 6.6 mm [0.260 in]

Insertion Length U

  • To customer specification

Connection Length H

  • 57 mm [2.244 in]
  • Others on request

Sealing Face Diameter G

  • per ASME B16.5 (raised face RF):
  • for DN 1": 51 mm [2.079 in]
  • for DN 1-1/2": 73 mm [2.874 in]
  • for DN 2": 92 mm [3.622 in]

Max. Process Temperature, Process Pressure

  • Depending on:
  • Thermowell design
  • - Dimensions
  • - Material
  • - Flange pressure rating of the clamping flange
  • Process conditions
  • - Flow rate
  • - Density of medium

Hydrostatic Pressure Test

  • As the assumed flange material, the TW30 thermowell material is used.
  • This non-destructive test is performed in accordance with ASME B31.3 using the,pressure values of the flange standard ASME B16.5, depending on pressure rating
  • temperature range and material within the corresponding pressure-temperature rating,table.

Wake Frequency Calculation (Option)

  • Per ASME PTC 19.3 TW-2016 recommended in critical applications as a WIKA engineering service
  • For further information see Technical information IN 00.15 “Wake frequency calculation”.

Typical Applications

  • Petrochemical industry, on-/offshore, plant construction
  • For high process loads