Flanged Thermowell

The Ashcroft® flanged thermowell is used when pressure, high velocity and corrosive process media exist. This serves to isolate and protect the sensing instrument, and permits removal of a sensing instrument without shutting down the process. Thermowells are offered in a wide selection of materials, sizes and dimensions; a perfect solution for protecting the process and extending product service life.

Key Features:

  • One piece bar stock
  • Wide selection of materials
  • Selection of shank styles
  • Stamped with date code, material and heat numbers


  • Raised face, flat face and ring joint versions (ASME B16.5)
  • Process connection: 1", 1 1/2" and 2"
  • Bore size: .260", .385"
  • Flange ratings: 150, 300, 600, 900, 1500 and 2500 class

The flanged thermowell is ideal where safety and product integrity is essential:

Process Market:

  • Chemical and Petrochemical Plants
  • Water and Wastewater pressure Control

Medical and Life Sciences:

  • Pharmaceutical / Biotech
  • Food and Beverage
  • Material Test Report (MTR)
  • Hydrostatic Testing
  • Wake Frequency Analysis