Weld-In Thermowell

Brand: Ashcroft Inc
Does not ship to United States

A thermowell provides invaluable triple duty service, by protecting your delicate temperature sensing instrumentation.

Protects your instrument against corrosive effects and resulting physical damage caused by media flow.

Permits instrument interchange or calibration check without disturbing or closing down the process. Helps to contain dangerous or costly process fluids, when properly installed as an integral part of the vessel or piping.

A weld-in thermowell is welded directly into the process tank or piping serving to isolate and protect your temperature instrumentation.
  • One piece bar stock construction 
  • Large selection of mill traceable materials 
  • Stamped with material, heat number and date code 
  • Various test reports and certifications 
  • Wake frequency calculations per ASME PTC 19.3 -2010 


Insertion 'U' Length

  • 2.5” to 22.5” (63.5 to 571.5 mm)

Approvals & Certifications

  • Hydrostatic Internal Testing
  • Material Test Report
  • Mill Certificate

Name Plate, Tag Material

  • Stainless Steel

Cap Material

  • Brass
  • Stainless Steel


  • Shank Style: Tapered

Welded Connection

  • 1-1/2” Weld End

Materials of Construction

  • 304 Stainless Steel
  • 316 Stainless Steel
  • Chain: Brass
  • Chain: Stainless Steel

NPS Connection

  • Instrument Connection: 1/2” NPSM Female

NPT Connection

  • Instrument Connection: 1/2” NPT Female

Bore Size

  • 0.260” (6.6 mm)
  • 0.385” (9.78 mm)

  • Biotechnology
  • Chemical & Petrochemical
  • Food & Beverage
  • Pharmaceutical
  • Water & Wastewater Pressure Control
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