Metal Protection Tubes

Stainless Steel | Nickel Alloy | Carbon Steel | Cast Iron

Metal Protection Tubes

General

Metal pipe thermocouple protection tubes are an economical alternative to thermowells machined from solid bar stock. They also allow the protection of very long thermocouples. This would not be possible with a machined thermowell. Metal pipe style protection tubes also allow the flexibility of using ceramic bead insulated thermocouples or MgO thermocouple elements.

Arklay Richards can manufacture metal pipe thermocouple protection tubes for difficult temperature monitoring and control applications with extreme heat, corrosive or abrasive environments. Metal Pipe Protection Tubes can be fabricated in a variety of metals including Austenitic and Ferritic Stainless Steels, High Nickel Alloys, Low Carbon Steel, Titanium and other specialty alloys. Metal pipe protection tubes can be made with pipe from 1/8" NPS up to 1 1/4" NPS. No matter how difficult your specific application, we can help you select the proper metal protection tubes. Simply call one of our sales engineers and state the quantity, temperature range, conditions and length of metal protection tube you require.

Construction:  See pictures below.

Metal Pipe and Miniature Size Tube Configurations

Richards metal thermocouple protection tubes are manufactured using our special processes to maximize the tube service life. This is evident by our uniquely shaped, heavy mass tips which have been proven in the field for years. Prior to shipment, each tube goes through our Hydro-Pneumatic testing to check for porosity.   Protection tubes are typically made with a closed tip and one threaded on the cold end, but they are also available with open ends and various threading options.

 Open Tube Examples:

The part number  601-YOBE-12 signifies a 1” O.D., Alloy 601, Open Both Ends, and no thread.

Part number  601-OBE-12 signifies a 1” O.D., Alloy 601, Open Both Ends, and one end threaded.

The part number  601-OBE2T-12  signifies a 1” O.D., Alloy 601, Open Both Ends, and both ends threaded.

Closed Tube Examples:

The part number  601-12  signifies a 1” O.D., Alloy 601, closed one end, and one end threaded.

The part number  601-12-NT  signifies a 1” O.D., Alloy 601, closed one end, and no thread.

Specifications

  • Available in all high temperature Nickel alloys
  • Specialty corrosion resistant alloys
  • Available in most 300 and 400 series stainless steel
  • Metal protection tubes can be fabricated in sizes from 1/8" NPS to 1 1/4" NPS
  • Pipe schedules 40, 80, and 160
  • One piece metal protection tubes can be made up to 21 feet in length.
  • Open both end flash tubes with custom orifice
  • Custom shaped tip configurations
  • Pipe wells with welded bushings or ANSI flanges
  • Bent angle metal protection tubes
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Sizes

  • Fabricated from 1/8" to 1 1/4" pipe
  • Pipe schedules 40, 80, and 160
  • One piece to 21 feet in length.

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