Danfoss AVTBWELL Brass Well

The Danfoss AVTBWELL is a high-grade 3/4" brass thermowell engineered specifically for the 0.7" diameter sensors used in AVTB and AVTB-RA thermostatic water valves. This immersion pocket acts as a protective barrier, allowing for the inspection or replacement of the temperature sensor without needing to depressurize or drain the HVACR system. Constructed from corrosion-resistant brass, it provides a stable environment for precise thermal sensing, maintaining the accuracy of your self-acting temperature controllers in hot water tanks, heat exchangers, and oil preheaters.

For veteran contractors, the Danfoss 003N0050 is recognized for its robust external thread connection and 220 mm insertion length, ensuring sufficient immersion depth for consistent heat transfer. When installing, we recommend the use of heat-conducting compound within the well to eliminate air gaps and maximize response times. This sensor pocket is a critical Danfoss OEM replacement part for maintaining PN 16 pressure-rated systems in demanding industrial and commercial heating applications.

• System Continuity: Allows for 0.7" sensor maintenance and replacement without the need for a full system shutdown or fluid drainage.
• Durable Brass Construction: High-quality material prevents corrosion and ensures long-term integrity in medium-contact applications.
• Precision Fit: Specifically machined for Danfoss AVTB sensors to ensure a tight, secure fit and reliable temperature regulation.
• Standard Connection: Features 3/4 inch threads for easy integration into existing pipework and standard valve bodies.

Is thermal paste required for this well?
Yes, for optimal thermal conductivity and accurate temperature readings, the gap between the 0.7" sensor and the brass pocket walls should be filled with a professional-grade heat transfer compound.

Can this be used with stainless steel sensors?
The well is compatible with any 0.7" (18mm) diameter sensor. For HVAC applications involving Danfoss thermostatic elements, this brass well provides the standard protection required for the capillary bulb.

Does this fit the AVTA series as well?
While primarily used for AVTB heating valves, these sensor pockets are also compatible with AVTA cooling valves that utilize the 18 mm sensor bulb, providing versatile protection across multiple Danfoss valve platforms.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.