The AVTA 20 003N3132 is part of the Danfoss AVTA self‑acting thermostatic valve series, designed to regulate flow of cooling water or other liquids based solely on the sensed temperature—no electricity or compressed air is required. It uses a remote temperature sensor and capillary filled with a universal charge; as sensor temperature rises within the 0–30 °C range, the valve opens proportionally, increasing flow to remove heat, and closes as temperature falls.
This model has a DN 20 (3/4″) nominal size with threaded connections (AVTA 20), an orifice size of 20 mm, and a brass body suitable for water and many oil‑based media. The medium temperature range is typically −25…+130 °C, while the sensor temperature setting range is 0–30 °C, adjustable via a setting knob on the sensor head, allowing accurate control in low‑temperature cooling circuits. The valve has an “opens on rising sensor temperature” configuration, making it ideal for cooling water control of hydraulic systems, compressors, heat exchangers and similar equipment.
The universal charge design ensures stable operation over a wide differential between sensor and valve body temperatures and allows mounting the sensor on the medium to be controlled while the valve sits in the cooling line. The assembly is supplied with valve body, capillary and remote sensor bulb, often as a complete set in original packaging, ready for installation. Typical applications include cooling water regulation for machinery, oil coolers, compressors, molds and process equipment, where maintaining a set temperature without external power simplifies design and improves reliability.
Key Specifications
