Danfoss AVTA 25 thermostatically operated water valve, genuine OEM code 003N0047. Self-acting proportional temperature-regulating valve for cooling-water and heating circuits: it opens on rising sensor temperature and needs no external power supply, compressed air or electricity. Mass charge with a regulating range of 25–65 °C. Connection G 1 (ISO 228-1); kv 5.5 m³/h; brass valve body. Pressure-relieved design — the degree of opening is not affected by differential pressure. Supplied complete with capillary tube gland and hermetically sealed thermostatic element (sensor 18 x 210 mm, capillary 2000 mm). Mass charge — the sensor must be installed in an environment warmer than the valve body; short time constant. EAN 5702423005574.
| Brand | Danfoss |
| Part number | 003N0047 |
| Type | AVTA 25 — thermostatically operated (self-acting) water regulating valve |
| Category | HVAC & Refrigeration — Water Regulating Valves |
| Function | Opens on rising sensor temperature (proportional flow regulation) |
| Charge type | Mass |
| Regulating range | 25–65 °C |
| kv value | 5.5 m³/h |
| Valve size / orifice | DN25 / 25 mm |
| Connection | G 1 (ISO 228-1) |
| Body material | Brass |
| Seat / cone material | EPDM (ethylene-propylene rubber) |
| Sensor | 18 x 210 mm |
| Capillary tube length | 2000 mm |
| Max. working pressure (MWP) | 16 bar (232 psi) |
| Max. test pressure | 25 bar (365 psi) |
| Max. pressure on sensor | 25 bar (365 psi) |
| Medium temperature range | -25 to 130 °C (-13 to 266 °F) |
| Media | fresh water or neutral brine (ethylene glycol up to 40%) |
| Net weight | 1.246 kg |
| EAN | 5702423005574 |
| HS code | 8481.80 (thermostatically controlled valves) |
| Material | Brass |
| Pressure rating | 16 bar (232 psi) max working pressure |
| Temperature range | Regulating range 25–65 °C; medium -25 to 130 °C |
| Standard size | G 1 |
| Thread standard | G 1 |
| MOQ | 1 |
Self-acting valve — no power supply required. Select charge type (Mass) and regulating range (25–65 °C) to suit the temperature to be maintained; aim to keep the required sensor temperature near the middle of the range. Install an FV strainer ahead of the valve; route the capillary without kinks.