Siemens STA Thermal (Thermoelectric) Valve Actuator STA321.40L10 · AC 230 V · On/Off · 100 N
Siemens STA Thermal (Thermoelectric) Valve Actuator
The Siemens STA series are quiet thermoelectric actuators that push the valve stem by means of a heated expansion element. They are normally closed (NC) when de-energized; with 100–125 N positioning force and a 4–6.5 mm stroke, they are used on zone valves, small control valves and pressure-independent valves.
The STA321 models are for AC 230 V on/off control, while the STA161.65L10 has an AC/DC 24 V supply and modulating control with a DC 0…10 V signal. The valve connection and compatible valve bodies are listed below.
Models and order codes
| Model | Power supply | Control | Actuating force | Stroke | Operating time | Order code |
|---|---|---|---|---|---|---|
| STA321.40L10 | AC 230 V | On/Off | 100 N | 4.0 mm | 210 s | S55174-A218 |
| STA321.65L10 | AC 230 V | On/Off | 125 N | 6.5 mm | — | S55174-A200 |
| STA161.65L10 | AC/DC 24 V | DC 0…10 V | 125 N | 6.5 mm | 270 s | S55174-A214 |
Technical specifications
| Specification | Value |
|---|---|
| Protection class (IP) | IP54 |
| Cable length | 1 m |
Compatible products
- Siemens VVI46 Internally Threaded 2-Way Zone Valve PN16 — VVI46.15/2, VVI46.20/2, VVI46.25/2
- Siemens VD1…CLC 2-Way Small Control Valve PN10 — VD115CLC, VD120CLC, VD125CLC
- Siemens VXI46 Internally Threaded 3-Way Zone Valve PN16 — VXI46.15/2, VXI46.20/2, VXI46.25/2
- Siemens VPI46 Internally Threaded Pressure-Independent Control Valve (PICV) PN25 — VPI46.15L0.6Q, VPI46.20F1.4, VPI46.25F1.8, VPI46.32F4
- Siemens VPP46 Externally Threaded Pressure-Independent Combined Balancing and Control Valve PN25 — VPP46.15F1.4, VPP46.15F1.4Q, VPP46.15L0.4, VPP46.15L0.6, VPP46.15L0.6Q, VPP46.20F1.4, VPP46.20F1.8, VPP46.25F1.8, VPP46.25F3.6, VPP46.32F4
- Siemens VQP46 Externally Threaded On/Off Pressure-Independent Control Valve PN25 — VQP46.15F1.3, VQP46.15F1.3Q, VQP46.15L0.5, VQP46.15L0.5Q, VQP46.20F1.5, VQP46.20F1.5Q, VQP46.25F1.8
- Siemens VQI46 Internally Threaded On/Off Pressure-Independent Control Valve PN25 — VQI46.15F1.3, VQI46.15F1.3Q, VQI46.20F1.5Q, VQI46.25F1.8
- Siemens RDD Series Digital Room Thermostat (RDD310/MM, RDD50.1, RDD100.1RF) — RDD100.1RF, RDD310/MM
- Siemens RDH100 Electronic Room Thermostat (Wired / Wireless Set) — RDH100, RDH100RF/SET
- Siemens RDE Series Programmable Digital Room Thermostat — RDE100.1, RDE50.1RF/SET
This list is verified compatibility information based on Siemens product matching data; it is not a list of similar-product suggestions. You can make the final selection with our engineering team based on your project conditions (differential pressure, stroke, control signal).
Selection and installation notes
- The actuator's actuating force and stroke must match the close-off pressure and stroke of the valve it is fitted to.
- The supply voltage and control signal (3-position, DC 0…10 V or on/off) must match the controller output.
- Refer to the datasheet for mounting position and ambient temperature limits.
Technical documents
You can find them on the manufacturer's website by searching for the Siemens document number:
- A6V14155596 — Data sheet (English)
- A6V10322829 — Datasheet (English)
- A6V14084638 — Data sheet (German)
- A6V14029265 — Data sheet (English)
- A6V14084672 — Data sheet (German)
- A6V13791111 — Data sheet (English)
For the right model selection and wholesale or project pricing, contact the Novus Energy engineering team on our WhatsApp line.
Siemens STA321.40L10 Vana Aktüatörü
İki yollu kontrol vanalarını 230 V sinyalle açıp kapatan termik aktüatör.
Teknik özellikler
| Özellik | Değer |
|---|---|
| Model | STA321.40L10 |
| Besleme | 230 V |
| Uyumlu vana | Siemens VD125 serisi |