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 Thermowell Catalogue

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

When you need it for a shutdown, these guys come thru.

Steve P., Petrochemical user

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