Danfoss 003N-8252RA Temperature Regulator

The Danfoss 003N-8252RA Temperature Regulator is a heavy-duty, self-acting AVTA thermostatic valve designed for precision cooling control in demanding HVACR and industrial applications. This 1-inch valve operates on an open-on-rise principle, making it ideal for managing flow in heat exchangers, oil coolers, and injection molding machinery. With a fixed temperature range of 77-F to 149-F (25-C to 65-C), this regulator utilizes a high-performance adsorption charge, ensuring rapid response times even when the capillary tube is cooler than the sensor. The Danfoss AVTA series is renowned for its pressure-neutralized design, which prevents fluctuations in differential pressure from affecting setpoint accuracy. Built with a brass body and reinforced diaphragms, the 003N8252RA provides a reliable mechanical solution for water-cooled systems and industrial processes requiring consistent thermal regulation without external power requirements.

• Self-Acting Design: Eliminates the need for electrical wiring or control signals, reducing installation complexity and potential points of failure.
• Precise Thermal Control: The thermal expansion valve mechanism reacts instantly to temperature changes at the sensor to maintain target setpoints.
• Application Versatility: Direct-acting 1" NPT connection sized for standard commercial liquid cooling loops and industrial 003N8252RA replacements.
• Dirty Fluid Tolerance: Robust internal components are less prone to clogging from scale or debris compared to solenoid-based cooling valves.
• Pressure Independence: Maintains a consistent flow rate regardless of supply pressure variations within the system.

Is the Danfoss 003N-8252RA compatible with oil cooling?
Yes, the Danfoss 003N-8252RA is frequently used in hydraulic oil cooling systems. Its adsorption charge is specifically tuned for fast reaction times at the sensing bulb, which is critical for preventing oil viscosity breakdown.

What is the difference between open-on-rise and close-on-rise valves?
This unit is an open-on-rise valve, meaning the valve opens as the temperature increases. This is the standard configuration for cooling control valves where more medium flow is required to lower the temperature.

Can I mount the sensor in any position?
The sensor should be installed in a location where the medium is circulating freely. While the adsorption charge offers flexibility, ensuring maximum surface area contact between the sensor and the process fluid is vital for HVAC temperature regulation accuracy.

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.