Danfoss 003N-7272RA AVTB-RA 20 Reverse Acting Thermostatic Temperature Regulator 3/4" 122-194°F

The Danfoss 003N-7272RA is an AVTB-RA 20 reverse acting (RA) self-acting thermostatic temperature controller designed for precise, automatic water temperature regulation in hydronic cooling and process control applications. Unlike standard direct-acting valves, this reverse acting model opens on a rise in sensor temperature, making it ideally suited for cooling system circuits where flow must increase as temperature rises.

The valve requires no external power source — it is fully self-actuating, driven by its integrated thermostatic element. It fits in either the supply or return line for installation flexibility, and its robust construction is rated to PN 16 (232 psi / 16 bar) working pressure.

Key Specifications:

• Model Series: AVTB-RA 20 (Reverse Acting)
• Connection Size: 3/4"
• Temperature Range: 122°F – 194°F (50°C – 90°C)
• Action: Opens on rising sensor temperature (Reverse Acting)
• Pressure Rating: PN 16 (232 psi / 16 bar)
• Actuation: Self-acting (no external power required)
• Installation: Can be fitted in supply or return line
• Media: Water

The AVTB-RA series from Danfoss is a trusted solution for proportional temperature control in commercial HVAC, district cooling, industrial process, and hydronic system applications. Cross-reference: 003N7272RA.