To avoid thermowell damage from mechanical loads, it is suggested performing a wake frequency calculation according to ASME PTC 19.3 TW-2016 standards for critical processes. If results are negative, solutions like shortening the thermowell stem or increasing root and tip diameters can be considered, though they may slow response time. Alternatively, a support collar stabilizes the thermowell stem within the flange nozzle but requires on-site machining. Tempotech’s Helical design reduces oscillation amplitude by over 90%, enabling quick, easy installation without a support collar, saving time and cost. .
Key Features:-
- Material 316,304,310,321,347, Alloy 20 , C-276,Inconel 800, Inconel 600 ,625, 825 , Monel 500 Titanium ( See Data Sheet)
- Fast Response as small root and tip diameters
- Heavy Duty design
- Less limitations due to Immersion length
Application Note
TWV-H Helical Vanstone Thermowell is designed for reliable protection of temperature sensors in demanding industrial environments such as petrochemical industries, onshore and offshore installations, and plant construction.
The helical design enhances strength and reduces vibration effects caused by high flow velocities, ensuring stable and accurate temperature measurement. The Vanstone connection allows easy installation and removal without disturbing the process, making maintenance simple and efficient.
Engineered to withstand high process loads, pressure, and aggressive media, the TWV-H thermowell ensures long service life while safeguarding sensors in extreme operating conditions.
Applications:
- Petrochemical and chemical industries
- Onshore and offshore installations
- Refineries and process plants
- High-pressure and high-flow systems
- Industrial plant construction






