The SINRO DO1 SR12 series electric valve is used to control the opening or closing of cold or hot water air conditioning system pipes, with features such as large flow, low noise, and stable reliability.
The SR12 series electric valve controls the opening and closing of hot‑ or cold‑water pipes in air‑conditioning systems to maintain room temperature. It is driven by a unidirectional hysteresis synchronous motor with spring reset, staying normally closed until a thermostat signal powers the valve.
The manual lists material construction, rated voltage (220 VAC, 50/60 Hz), power consumption (6.5 W), pressure rating (2.1 MPa), and detailed dimensions for various DN sizes. Installation notes cover mounting angles, removal of the handle lock, and precautions for vertical pipe installations. This manual is written in Chinese.
| Valve body material | Forged brass |
|---|---|
| Seal material | Nitrile rubber (NBR) |
| Rated voltage | 220 VAC, 50/60 Hz |
| Maximum body pressure | 2.1 MPa |
| Operating temperature range | 2 °C – 94 °C |
| Motor run time after power applied | ≈ 15 s |
| Spring reset time after power removed | ≈ 5 s |
| Storage temperature range | -20 °C – 65 °C |
The valve is rated for 220 VAC at 50/60 Hz.
The motor runs for about 15 seconds after power is applied.
The valve body is made of forged brass.
The valve body can tolerate up to 2.1 MPa pressure.