Danfoss 003N7120 Valve

The Danfoss 003N7120 is a heavy-duty AVTA 20 thermostatic cooling water valve designed for self-acting, proportional flow regulation in demand-heavy industrial environments. Engineered with a 3/4 inch NPT connection and a robust forged brass valve body, this unit operates without auxiliary power, utilizing an adsorption charge to open effectively on rising sensor temperatures. With a temperature control range of 50-175°F and a 90-inch capillary tube, this Danfoss water regulating valve provides steady modulating control for water-cooled condensers and refrigeration systems. It handles a maximum working pressure of 232 psig and media temperatures up to 266°F, making it a reliable choice for HVACR contractors managing high-pressure cooling loops where energy-neutral operation and consistent thermal balance are required.

• Self-Acting Operation: Eliminates the need for external electricity or compressed air, ensuring continuous cooling water regulation.
• Precise Thermal Response: Features a high-integrity adsorption charge sensor (3/8" x 5-29/32") that remains unaffected by ambient valve temperature.
• Durable Construction: Built with a corrosion-resistant brass body and stainless steel bellows to withstand harsh neutral media environments.
• Wide Compatibility: Optimized for NPT piping systems with a 3.9 Cv flow coefficient (3.4 m³/h Kv value) for efficient heat exchange.

How does this valve react to temperature changes?
The Danfoss 003N7120 is an "open on rise" valve. As the sensor detects a temperature increase above your set point, the internal pressure overcomes the reference spring to increase water flow, maintaining thermal equilibrium.

Can I install this on either the supply or return line?
Yes, the AVTA 20 series is designed for flexible installation in either the cooling water supply or the return line, depending on your specific system architecture and accessibility requirements.

What is the maximum pressure limit for the sensor?
The thermostatic element is rated for a maximum sensor pressure of 362 psig (25 bar), providing a significant safety margin during high-load operating cycles.

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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.