Stainless Steel Thermowell 1/2" NPT | 50–200mm Temperature Sensor

Stainless Steel Thermowell with 1/2" NPT Threads

Protect your temperature sensors with this precision-crafted stainless steel thermowell. Designed with industry-standard 1/2" NPT threads, this thermowell creates a secure, sealed pocket that shields thermocouples, RTDs, and other temperature probes from direct media exposure — ideal for brewing, HVAC, industrial pipelines, water heaters, and process control applications.

Key Features

• Premium Stainless Steel Construction — Corrosion-resistant and built for demanding environments including liquids, steam, and gases
• Standard 1/2" NPT Threads — Easy installation into most pipes, tanks, vessels, and fittings without adapters
• Multiple Length Options — Available in 50mm, 100mm, 150mm, and 200mm insertion depths to match your specific installation requirements
• Fits 6mm Diameter Probes — OD of 8mm tube fits a 6mm diameter sensor for a snug, accurate reading
• Silver Finish — Clean, professional appearance suitable for both industrial and home brewing setups
• Reusable & Easy to Clean — Remove and replace your sensor without draining or shutting down the system

Specifications

What's in the Box

• 1 × Stainless Steel Thermowell

Please allow 1–3mm tolerance due to manual measurement. Monitor color settings may slightly affect the appearance of the item in photos.

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Learn More

For guidance on safe installation practices for temperature measurement hardware in industrial and process environments, visit OSHA's Instrumentation & Safety Resources. For standards on process instrumentation accuracy, refer to NIST Thermometry Resources.

Frequently Asked Questions

Q: What temperature sensors are compatible with this stainless steel thermowell?

A: This thermowell is compatible with any temperature probe or sensor with a diameter of up to 6mm, including common thermocouples (Type K, J, T) and RTD probes. The 1/2" NPT thread ensures broad compatibility with standard fittings found in brewing, HVAC, and industrial systems.

Q: What is the purpose of a thermowell and why do I need one?

A: A thermowell is a protective sleeve that allows a temperature sensor to be inserted into a pipe or vessel without direct contact with the media (liquid, gas, or steam). It allows you to remove, replace, or calibrate your sensor without shutting down or draining your system, extending sensor life and improving safety.

Q: Which insertion length should I choose — 50mm, 100mm, 150mm, or 200mm?

A: Choose based on the diameter of your pipe or vessel. A general rule is that the thermowell should reach approximately the center of the flow or media. For small pipes (under 1 inch), 50mm is often sufficient. For larger tanks or deeper vessels, 150mm or 200mm gives more accurate readings by ensuring the probe reaches the core of the media.

Q: Is this thermowell suitable for home brewing or beer fermentation?

A: Yes! The stainless steel construction is food-safe and highly resistant to wort, water, and mild cleaning agents. The 1/2" NPT thread is a common standard in brewing fermenters and kettles, making this thermowell an excellent choice for precise temperature monitoring during fermentation and brewing.