Description
The Bar Stock Thermowell is a precision-machined protective fitting designed to safeguard RTDs, Pt100 sensors, thermocouples, and other industrial temperature sensors from high-pressure, corrosive, and high-temperature process conditions. Unlike fabricated thermowells that are assembled using welded components, a bar stock thermowell is manufactured from a single solid stainless steel bar, providing superior mechanical strength, dimensional accuracy, and long-term reliability in demanding industrial applications.
The Aavad Instrument Bar Stock Thermowell is manufactured from SS316L stainless steel, offering excellent corrosion resistance and durability in chemical processing, oil & gas, power generation, water treatment, and other industrial environments. It features an M33×2 metric threaded process connection, making it particularly suitable for European-standard process equipment, OEM machinery, packaged skids, and industrial systems where metric threads are specified instead of BSP or NPT connections.
This thermowell incorporates a tapered stem profile, reducing the outside diameter from 28 mm to 24 mm while maintaining an 8 mm bore for sensor installation. The tapered design improves the strength-to-weight balance of the thermowell and helps reduce the effects of flow-induced vibration in suitable operating conditions. Its standard 150 mm U-length, with custom lengths available up to 600 mm, provides installation flexibility across a wide range of industrial processes.
The threaded installation allows quick mounting and convenient maintenance while protecting the temperature sensor from direct contact with the process medium. This enables sensor replacement or calibration without exposing the sensing element to harsh operating conditions, helping reduce maintenance time and improve overall plant reliability.
Key Features
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European Standard M33×2 Metric Thread Purpose-built metric process thread ensures exact fitment for imported European equipment, OEM skids, and turbines.
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Monolithic Solid Bar Stock Construction Precision gun-drilled from solid SS316L forged bar stock—eliminating welded pressure seams.
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Tapered Shank Profile (28mm to 24mm OD) Tapered stem engineering shifts natural resonant frequency upward to combat flow-induced vortex shedding.
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Low-Carbon SS316L Stainless Steel High molybdenum content and low carbon composition prevent intergranular carbide precipitation during high-temperature service.
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Precision 8mm Internal Bore ID Optimized bore dimension provides rapid thermal response time for standard $6text{mm}$ and $8text{mm}$ industrial RTD elements.
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Extended Reach Flexibility (Up to 600mm U-Length) Available in custom insertion depths from a base 150mm up to 600mm for large-bore piping and deep vessels.
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70mm Extension Lag Length Integrates a 70mm neck extension to clear pipe insulation, cold-face lagging, and transmitter enclosures.
Applications
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European-Designed Process Skids & Packaged Plant Modules Direct replacement for imported European chemical, pharmaceutical, and gas processing equipment.
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Oil & Gas Refineries & Offshore Platforms High-pressure hydraulic lines, lube oil systems, and process fluid manifolds.
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Power Generation & Gas Turbine Utilities Main steam headers, turbine casing temperature points, and boiler feed lines.
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Chemical & Petrochemical Processing Facilities Corrosive fluid loops, polymer processing lines, and high-pressure reactors.
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Heavy Machinery & Hydraulic Power Units (HPUs) High-velocity oil reservoirs, circulation lines, and heat exchangers.
Datasheet
FAQs
1. What is a Bar Stock Thermowell?
A Bar Stock Thermowell is a protective fitting for industrial temperature sensors that is precision-machined from a single solid metal bar. It shields RTDs, Pt100 sensors, Pt1000 sensors, and thermocouples from pressure, corrosion, process flow, and mechanical damage while providing superior strength, durability, and reliability compared to fabricated thermowells.
2. Why should I choose a Bar Stock Thermowell instead of a Fabricated Thermowell?
Unlike fabricated thermowells, Bar Stock Thermowells are manufactured from one solid piece of metal without welded joints. This eliminates potential weak points, improves mechanical strength, enhances dimensional accuracy, and provides greater reliability in high-pressure, high-temperature, and demanding industrial applications.
3. What is the advantage of an M33×2 Process Connection?
The M33×2 metric thread is widely used on European-designed industrial equipment, process skids, and OEM machinery. Selecting the correct process connection ensures secure installation, leak-free sealing, proper mechanical support, and compatibility with existing pipelines and equipment, reducing installation time and maintenance issues.
4. Which Temperature Sensors can be installed in this Thermowell?
This thermowell is designed to accommodate a variety of industrial temperature sensors, including RTD sensors, Pt100 sensors, Pt1000 sensors, thermocouples, and other compatible sensing elements that match the specified bore diameter and installation dimensions. The thermowell enables sensor replacement without disturbing the process.
5. Why is SS316L used for this Thermowell?
SS316L stainless steel offers outstanding corrosion resistance, excellent mechanical strength, and superior durability in aggressive industrial environments. Its low carbon content improves resistance to weld-related corrosion, making it ideal for chemical processing, water treatment, pharmaceutical utilities, food & beverage processing, marine applications, and general process industries.
6. What industries commonly use Bar Stock Thermowells?
Bar Stock Thermowells are widely used across industries including chemical processing, petrochemical plants, oil & gas refineries, power generation, pharmaceutical manufacturing, water and wastewater treatment, food processing, steel plants, cement plants, pulp & paper, and OEM process equipment, where accurate and reliable temperature measurement is essential.
7. Why Choose Aavad Instrument Bar Stock Thermowells?
Aavad Instrument Pvt. Ltd. Bar Stock Thermowells are precision-machined from solid bar stock to deliver exceptional mechanical strength, dimensional accuracy, and long service life. Manufactured using high-quality materials such as SS316L, SS304, SS310, Inconel, Monel, and other special alloys, our thermowells are available with customized process connections, insertion lengths, bore sizes, and tip configurations, making them suitable for demanding applications in oil & gas, chemical processing, pharmaceuticals, power plants, and industrial automation.
