Reotemp® Standard Sanitary Tri-Clamp Thermowell (STF)
- Thermowell Series: Standard Sanitary Tri-Clamp, Series STF
- Provides Sanitary Protection for Threaded Temperature Instruments
- Allows for Easy Removal of Instrument for Calibration or Replacement
- All 316L Stainless Steel with 32Ra Finish
- Designed for use with 1/2″ NPT Threaded Temperature Gauges
Reotemp® Standard Sanitary Tri-Clamp Thermowell (STF)
Reotemp® sanitary thermowells make it possible to remove an instrument without dropping pressure or losing contents of the process and protect the instrument from getting bent by the process media. Each 316L stainless steel thermowell is die stamped, finished to 32Ra, and has a tri-clamp connection which allows for easy cleaning to prevent contamination of the process. They are used in the dairy, food processing and pharmaceutical industries.
These standard sanitary thermowells are offered in 316L stainless steel in 1.5", 2", 2.5" and 3" tri-clamp connections with element lengths from 2.5" to 12". If you are looking for additional options, like a different element length, connection size, or material, please reach out to our sales team.
Quick Guide: Standard Thermowells vs. Lagging Thermowells
Lagging Thermowells are designed for applications involving insulated systems or lagging layers, which are common in processes requiring temperature stability or safety from extreme conditions. These thermowells include an extended neck to bridge the insulation layer, ensuring accurate temperature measurements without compromising the insulation.
If you are looking for more in-depth information, read our blog post on understanding the differences between standard and lagging thermowells.
Shop Reotemp® Lagging Sanitary Tri-Clamp Thermowells
| SKU | Tri-Clamp Size (P) |
Element Length (A) |
Bore Diameter (B) |
Insertion Length (U) |
Overall Length (L) |
Shank Diameter (Q) |
Lag (T) |
|---|---|---|---|---|---|---|---|
| STF1.5-2.5 | 1.5" | 2.5" | 0.260" | 1.63" | 2.88" | 0.375" | 0.0" |
| STF1.5-4 | 1.5" | 4" | 0.260" | 2.5" | 4.25" | 0.375" | 0.0" |
| STF1.5-6 | 1.5" | 6" | 0.260" | 4.5" | 6.25" | 0.375" | 0.0" |
| STF1.5-9 | 1.5" | 9" | 0.260" | 7.5" | 9.25" | 0.375" | 0.0" |
| STF1.5-12 | 1.5" | 12" | 0.260" | 10.5" | 12.25" | 0.375" | 0.0" |
| STF2-2.5 | 2" | 2.5" | 0.260" | 1.63" | 2.88" | 0.375" | 0.0" |
| STF2-4 | 2" | 4" | 0.260" | 2.5" | 4.25" | 0.375" | 0.0" |
| STF2-6 | 2" | 6" | 0.260" | 4.5" | 6.25" | 0.375" | 0.0" |
| STF2-9 | 2" | 9" | 0.260" | 7.5" | 9.25" | 0.375" | 0.0" |
| STF2-12 | 2" | 12" | 0.260" | 10.5" | 12.25" | 0.375" | 0.0" |
| STF2.5-2.5 | 2.5" | 2.5" | 0.260" | 1.63" | 2.88" | 0.375" | 0.0" |
| STF2.5-4 | 2.5" | 4" | 0.260" | 2.5" | 4.25" | 0.375" | 0.0" |
| STF2.5-6 | 2.5" | 6" | 0.260" | 4.5" | 6.25" | 0.375" | 0.0" |
| STF2.5-9 | 2.5" | 9" | 0.260" | 7.5" | 9.25" | 0.375" | 0.0" |
| STF2.5-12 | 2.5" | 12" | 0.260" | 10.5" | 12.25" | 0.375" | 0.0" |
| STF3-2.5 | 3" | 2.5" | 0.260" | 1.63" | 2.88" | 0.375" | 0.0" |
| STF3-4 | 3" | 4" | 0.260" | 2.5" | 4.25" | 0.375" | 0.0" |
| STF3-6 | 3" | 6" | 0.260" | 4.5" | 6.25" | 0.375" | 0.0" |
| STF3-9 | 3" | 9" | 0.260" | 7.5" | 9.25" | 0.375" | 0.0" |
| STF3-12 | 3" | 12" | 0.260" | 10.5" | 12.25" | 0.375" | 0.0" |
| STF1.5-2.5B3 | 1.5" | 2.5" | 0.385" | 1.63" | 2.88" | 0.750" | 0.0" |
| STF1.5-4B3 | 1.5" | 4" | 0.385" | 2.5" | 4.25" | 0.750" | 0.0" |
| STF1.5-6B3 | 1.5" | 6" | 0.385" | 4.5" | 6.25" | 0.750" | 0.0" |
| STF1.5-9B3 | 1.5" | 9" | 0.385" | 7.5" | 9.25" | 0.750" | 0.0" |
| STF1.5-12B3 | 1.5" | 12" | 0.385" | 10.5" | 12.25" | 0.750" | 0.0" |
| STF2-2.5B3 | 2" | 2.5" | 0.385" | 1.63" | 2.88" | 0.750" | 0.0" |
| STF2-4B3 | 2" | 4" | 0.385" | 2.5" | 4.25" | 0.750" | 0.0" |
| STF2-6B3 | 2" | 6" | 0.385" | 4.5" | 6.25" | 0.750" | 0.0" |
| STF2-9B3 | 2" | 9" | 0.385" | 7.5" | 9.25" | 0.750" | 0.0" |
| STF2-12B3 | 2" | 12" | 0.385" | 10.5" | 12.25" | 0.750" | 0.0" |
| STF2.5-2.5B3 | 2.5" | 2.5" | 0.385" | 1.63" | 2.88" | 0.750" | 0.0" |
| STF2.5-4B3 | 2.5" | 4" | 0.385" | 2.5" | 4.25" | 0.750" | 0.0" |
| STF2.5-6B3 | 2.5" | 6" | 0.385" | 4.5" | 6.25" | 0.750" | 0.0" |
| STF2.5-9B3 | 2.5" | 9" | 0.385" | 7.5" | 9.25" | 0.750" | 0.0" |
| STF2.5-12B3 | 2.5" | 12" | 0.385" | 10.5" | 12.25" | 0.750" | 0.0" |
| STF3-2.5B3 | 3" | 2.5" | 0.385" | 1.63" | 2.88" | 0.750" | 0.0" |
| STF3-4B3 | 3" | 4" | 0.385" | 2.5" | 4.25" | 0.750" | 0.0" |
| STF3-6B3 | 3" | 6" | 0.385" | 4.5" | 6.25" | 0.750" | 0.0" |
| STF3-9B3 | 3" | 9" | 0.385" | 7.5" | 9.25" | 0.750" | 0.0" |
| STF3-12B3 | 3" | 12" | 0.385" | 10.5" | 12.25" | 0.750" | 0.0" |
Additional information
Line Drawings
| SKU | Description | Line Drawing |
|---|---|---|
| STF1.5-12 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 1.5″ Tri-Clamp, 12″ Element Length, STF1.5-12 |
|
| STF1.5-12B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 1.5″ Tri-Clamp, 12″ Element Length, STF1.5-12B3 |
|
| STF1.5-2.5 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 1.5″ Tri-Clamp, 2.5″ Element Length, STF1.5-2.5 |
|
| STF1.5-2.5B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 1.5″ Tri-Clamp, 2.5″ Element Length, STF1.5-2.5B3 |
|
| STF1.5-4 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 1.5″ Tri-Clamp, 4″ Element Length, STF1.5-4 |
|
| STF1.5-4B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 1.5″ Tri-Clamp, 4″ Element Length, STF1.5-4B3 |
|
| STF1.5-6 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 1.5″ Tri-Clamp, 6″ Element Length, STF1.5-6 |
|
| STF1.5-6B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 1.5″ Tri-Clamp, 6″ Element Length, STF1.5-6B3 |
|
| STF1.5-9 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 1.5″ Tri-Clamp, 9″ Element Length, STF1.5-9 |
|
| STF1.5-9B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 1.5″ Tri-Clamp, 9″ Element Length, STF1.5-9B3 |
|
| STF2-12 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2″ Tri-Clamp, 12″ Element Length, STF2-12 |
|
| STF2-12B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2″ Tri-Clamp, 12″ Element Length, STF2-12B3 |
|
| STF2-2.5 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2″ Tri-Clamp, 2.5″ Element Length, STF2-2.5 |
|
| STF2-2.5B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2″ Tri-Clamp, 2.5″ Element Length, STF2-2.5B3 |
|
| STF2-4 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2″ Tri-Clamp, 4″ Element Length, STF2-4 |
|
| STF2-4B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2″ Tri-Clamp, 4″ Element Length, STF2-4B3 |
|
| STF2-6 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2″ Tri-Clamp, 6″ Element Length, STF2-6 |
|
| STF2-6B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2″ Tri-Clamp, 6″ Element Length, STF2-6B3 |
|
| STF2-9 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2″ Tri-Clamp, 9″ Element Length, STF2-9 |
|
| STF2-9B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2″ Tri-Clamp, 9″ Element Length, STF2-9B3 |
|
| STF2.5-12 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2.5″ Tri-Clamp, 12″ Element Length, STF2.5-12 |
|
| STF2.5-12B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2.5″ Tri-Clamp, 12″ Element Length, STF2.5-12B3 |
|
| STF2.5-2.5 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2.5″ Tri-Clamp, 2.5″ Element Length, STF2.5-2.5 |
|
| STF2.5-2.5B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2.5″ Tri-Clamp, 2.5″ Element Length, STF2.5-2.5B3 |
|
| STF2.5-4 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2.5″ Tri-Clamp, 4″ Element Length, STF2.5-4 |
|
| STF2.5-4B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2.5″ Tri-Clamp, 4″ Element Length, STF2.5-4B3 |
|
| STF2.5-6 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2.5″ Tri-Clamp, 6″ Element Length, STF2.5-6 |
|
| STF2.5-6B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2.5″ Tri-Clamp, 6″ Element Length, STF2.5-6B3 |
|
| STF2.5-9 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 2.5″ Tri-Clamp, 9″ Element Length, STF2.5-9 |
|
| STF2.5-9B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 2.5″ Tri-Clamp, 9″ Element Length, STF2.5-9B3 |
|
| STF3-12 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 3″ Tri-Clamp, 12″ Element Length, STF3-12 |
|
| STF3-12B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 3″ Tri-Clamp, 12″ Element Length, STF3-12B3 |
|
| STF3-2.5 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 3″ Tri-Clamp, 2.5″ Element Length, STF3-2.5 |
|
| STF3-2.5B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 3″ Tri-Clamp, 2.5″ Element Length, STF3-2.5B3 |
|
| STF3-4 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 3″ Tri-Clamp, 4″ Element Length, STF3-4 |
|
| STF3-4B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 3″ Tri-Clamp, 4″ Element Length, STF3-4B3 |
|
| STF3-6 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 3″ Tri-Clamp, 6″ Element Length, STF3-6 |
|
| STF3-6B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 3″ Tri-Clamp, 6″ Element Length, STF3-6B3 |
|
| STF3-9 | Reotemp® Standard Sanitary Thermowell, .260″ Bore, 3″ Tri-Clamp, 9″ Element Length, STF3-9 |
|
| STF3-9B3 | Reotemp® Standard Sanitary Thermowell, .385″ Bore, 3″ Tri-Clamp, 9″ Element Length, STF3-9B3 |
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