Sanitary Thermowell
Ashcroft® sanitary thermowell isolates and protects a temperature instrument’s sensing element from pressurized, high velocity and corrosive media. These are typically used where exposed threads may collect contaminants such as in food processing or pharmaceutical production. The polish and large radius between the stem and flange support easier cleaning. Thermowells ensure longer life and accurate measurement while allowing the sensing instrument to be removed without shutting down the process. A wide selection of materials, sizes and dimensions are available.
Key Features:
- One piece bar stock construction
- Stamped with mil traceable material and heat number
- Testing and certifications including Wake Frequency Calculations per ASME PTC 19.3 TW-2016
- Standard or customized shank dimensions and styles
- Wide selection of material options
Applications:
Medical and Life Sciences:
- Pharmaceutical / Biotech
- Food and Beverage
Specifications
Datasheets & Instruction Manuals
Drawings & Product/Technical Information
Shank Style
Stepped
Straight
Tapered
Process Connection Size
1˝, 1 1⁄2˝ or 2˝ Tri-Clamp®
Instrument Connection
1/2 NPSM
1/2 NPT Female
Bore Size
0.260"
0.385"
Surface Finish
4-12 Ra
8-12 Ra
Lagging
2" if U-dimension is <3"
3" if U-dimension is >3"
Custom Lag dimensions are available
Cap and Chain
Brass
Stainless Steel
Datasheets:
Product/Technical Information:
Don't see what you are looking for? Click here to request more drawings.
Resources & Tools
Materials Selector
Use the selector to review compatible wetted materials and requirements of your application.
Unit Converter
Need to convert measurement units? Check out our quick and easy tool to convert pressure, temperature and flow units of measure.
Product Information
To learn more about the technical details for options available, review our product information (PI) pages.
Wake Frequency Calculator
Use the wake frequency calculator to help verify a specific thermowell for use in your application.
Take the Next Step
Get a Quote
Request a quote from us based on your specific requirements
Configure Part Number
You can easily create a product part number based on your specific instrument needs.
Have a Technical or General Question?
An Ashcroft expert is here to help answer your question.
FAQs
What is a lag on a thermowell?
A lag is the added EXTRA length on the installation end of a thermowell, typically called out to account for insulation thickness.
What is the difference between NPSM and NPT instrument connection threads?
NPSM threads are actually parallel but have the same pitch as NPT/NPF providing a fully engaged nice fit. NPT to NPT threads both being tapered can leave exposed threads.
Thermowells, what are they?
A Thermowell performs an invaluable triple-duty service:
1. it protects delicate instrument sensing elements against corrosive effects and physical damage caused by media flow,
2. it permits the instrument interchange or calibration check without disturbing or closing down the process and
3. it helps to contain costly or dangerous process fluids when properly installed as an integral part of the vessel or piping.
What Information is needed to run a Wake Frequency calculation of a thermowell?
Learn more with our pi-page – Wake Frequency Calculation Information page (TH-PI-1)
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