Danfoss AMV 33 fast electric actuator with spring return, 230 V, 450 N, 3 s/mm
- Application: safety-critical heating and DHW loops — auto-close on power loss
- Thrust: 450 N (motor) + spring return force
- Power / control signal: 230 V AC / 3-point
- Running time / IP: 3 s/mm (~30 s full stroke) / IP54
Where AMV 33 is used
AMV 33 is chosen for safety-critical systems where a power loss must not leave the control valve open. Typical cases — air-handling unit heaters (spring closes primary flow when the fan stops, protecting the coil from overheating), DHW primary loop (overheat protection if the controller fails), and heating systems in public buildings, hospitals and other objects where an incident has serious consequences. Same speed (3 s/mm) and motor as AMV 30 — with a return spring added.
Technical specifications
| Parameter | Value |
|---|---|
| Code | 082G3013 |
| Series | Danfoss AMV |
| Model | AMV 33 |
| Thrust | 450 N |
| Running time | 3 s/mm (~30 s full stroke) |
| Stroke | 10 mm |
| Power supply | 230 V AC, 50/60 Hz |
| Power consumption | 12 W |
| Control signal | 3-point (open / close / stop) |
| Fail-safe (spring return) | Yes — spring closes on power loss |
| Manual operation | Yes |
| Position feedback | No (external potentiometer required) |
| IP class | IP54 |
| Ambient T | 0 … 55 °C |
| Weight | ~1.89 kg |
When to choose AMV 33
- Air-handling unit heater primary loop (overheat protection when the fan stops)
- DHW primary loop — protection against excessive water temperature
- Public building heating where a fault has serious consequences
- Systems requiring Type A fail-safe close
- Compatibility: Danfoss VRB 2/VRB 3 (DN 15–50), VRG 2/VRG 3 (DN 15–40) control valves; works with Danfoss ECL 210/310, Ouman EH/S203 and any 3-point-output controller
B2B delivery and logistics via Amegata.lt
- 24-hour delivery across Lithuania (from our warehouse in Vilnius)
- Competitive B2B pricing — often below market average
- 30-day payment terms for companies (per contract)
- Free technical consultation for fail-safe sizing
Official Danfoss catalogue: store.danfoss.com/AMV 33 (082G3013)
Frequently asked questions
How does AMV 33 differ from AMV 30?
The key difference is the spring-return function: AMV 33 has a spring that automatically drives the valve closed on power loss (~15 s full stroke). AMV 30 stays where it is. Motor thrust (450 N), stroke (10 mm) and speed (3 s/mm) are identical.
Will the spring close the valve against system pressure?
Yes — the spring is sized to overcome standard control-valve working pressure (up to PN 16). If the system pressure exceeds the catalogue limit — separate differential-pressure protection (AVP or AVPL) is required.
How does the manual override work on power loss?
The manual mechanism allows the valve to be opened against the spring — useful during commissioning or service. Important: the manual override lever must be returned to the "auto" position, otherwise automatic control and the safety function are disabled.
What electrical protection is recommended for the supply line?
A dedicated B10A breaker and a 30 mA RCD are recommended. The fail-safe function depends on a full power interruption — a broken neutral or phase can cause incorrect spring release.
When to choose AMV 33 vs AMV 23?
Same spring principle — difference is speed: AMV 23 = 15 s/mm (standard), AMV 33 = 3 s/mm (fast). Air-handling heaters that need fast reaction when the fan stops — AMV 33. Heating where speed is not critical — AMV 23.
