Ouman M41A15 electric valve actuator, 3-point, 400 N, 24 V AC, fast, for DHW applications
- Application: DHW and high-pressure heating branch valve control (Ouman ecosystem)
- Force: 400 N (nominal stem force)
- Power + control signal: 24 V AC, 50/60 Hz, 3-point
- Running time + IP: 15 s (across 6.5 mm stroke), IP 43
Where Ouman M41A15 is used
M41A15 is positioned as the Ouman "larger actuator" version — 10× faster than the M31 series (15 s vs 150 s) and with higher force (400 N vs 300 N). This maps to two typical applications:
- DHW branch in multi-family buildings and hotels — where hot water demand fluctuates suddenly (morning peaks, spa zones) and the valve must reach the target position within 15-20 s.
- When valve Δp remains high (close to the VD-series max operating pressure of 21.5 bar with a 400 N actuator) — a 300 N M31 actuator may fail to close tightly in such conditions.
Technical specifications
| Parameter | Value |
|---|---|
| Code | OMA0207 |
| Model | Ouman M41A15 |
| Force | 400 N (nominal) |
| Running time | 15 s (across 6.5 mm) |
| Stroke | 6.5 mm |
| Power supply | 24 V AC, 50/60 Hz |
| Power consumption | ~5 VA |
| Control signal | 3-point control |
| IP rating | IP 43 |
| Fail-safe (safety return) | None (no spring return) |
| Ambient temperature | 0 … +50 °C |
| Media max T (valve) | up to +130 °C |
| Compatible valves | Ouman VD/VG series (VD220, VD225, VD232, VG…) |
| Application | DHW, high-Δp heating circuits |
When to choose Ouman M41A15
- Multi-family and hotel DHW branches — sudden flow spikes, fast valve response needed
- Substations with high Δp (close to the VD-series max of 21.5 bar) — 300 N actuators may fail to close tightly
- When better control accuracy in dynamic DHW mode is required than M31 can provide
- As a Danfoss AMV 30 functional replacement in Ouman controller projects
- Compatibility: Ouman VD220, VD225, VD232, VG series valves; as functional analogues — Danfoss AMV 30 (400 N, 3-point), Honeywell M7410 family. For control: Ouman EH-105, S203, EH-800, C203.
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 on actuator/valve pairing
Official Ouman catalogue: ouman.fi/en/products
Frequently asked questions
When is it worth paying more for M41A15 vs the M31 series?
When at least one of the following applies: fast response on the DHW branch (15 s vs 150 s — sudden demand peaks in multi-family buildings), higher force (400 N vs 300 N — high Δp), or better control accuracy in dynamic systems. For residential substations, M31A150 is sufficient and significantly more economical.
Does M41A15 replace a Danfoss AMV 30?
As a functional analogue — yes (400 N, 3-point, 15 s class). Mechanically, the adapter must be verified against the specific valve: Ouman VD-series actuators cannot mount directly on a Danfoss VRB valve without an adapter. If the project uses Danfoss VRB, staying with AMV 30 is cleaner.
What mounting position is allowed?
Mount vertically above the valve or horizontally. Do not mount the actuator below the valve — condensate can seep into the motor housing. Ambient temperature 0 … +50 °C (lower than the M31 series' +60 °C — worth checking in hot substation corners).
Can the control cable be extended?
Yes, via a junction box with the correct cross-section (0.75-1.5 mm²), respecting 24 V AC voltage-drop limits. Since M41A15 draws more (~5 VA vs 0.7-1.4 VA on the M31 series), for longer cable extensions (over 30 m) check the total resistance drop.
Does M41A15 have a safety return function?
No — like other Ouman M-series actuators, M41A15 has no spring return. On power loss the actuator stays in its current position. If the project requires automatic return to the closed position (e.g. safety on the DHW branch), select another manufacturer's spring-return line (Belimo, Siemens SQS series).
