Mac-Weld thermowells are of heavy duty design to withstand the challenging environments they have to operate in.

Our vanstone thermowells are designed and manufactured 100% in-house, and are made to accept standard and custom made thermometers, thermocouples, bulbs and RTD’s.
Available in a wide variety of sizes and configurations.

For details on our Vanstone Tapered, Vanstone Straight and Vanstone Stepped Thermowells, please see our product breakdown PDF below.

  • Lap joint flanges are available
  • Available in various shank styles; stepped, straight and tapered
  • Standard or customized shank dimensions and styles
  • Large selection of materials available
  • CRN approved thermowells
  • NACE compliant

Material Options: 316 Stainless Steel, 304 Stainless Steel, Carbon Steel, 310 Stainless Steel, 321 Stainless Steel, 347 Stainless Steel, Alloy 20, C-276, Duplex, Incoloy 800, Inconel 600, Inconel 625, Inconel 825, Monel 400, and Titanium (More available upon request)

Industries: Petrochemical industry. On & offshore. Plant construction.

Mac-Weld Thermowell Catalogue

Mac-Weld 2023 Thermowell Catalogue

Available in a variety of styles, sizes and materials, see our catalogue for more details.

Our machining process includes ISO and LEAN principals, our CNC machines are always updated for maximum efficiency

Looking for Vanstone Thermowells?