12V Solenoid Valve with ½ inch thread — automatic flow control, even during power cuts
Need to automatically shut off water or air flow when the power goes out? This 12V DC solenoid valve does exactly that: it instantly blocks the flow without manual intervention. It is perfect for solar thermal systems, pneumatic installations, or hot water circuits — anywhere you need reliable, simple flow management.
Note: This unit operates exclusively on 12V DC power. Please observe the polarity marked on the coil for correct operation.
Why choose this model? (Key Benefits):
- Automatic shut-off during power failure — Normally Closed (NC) design: the flow stops instantly when power is lost, eliminating the risk of uncontrolled leaks.
- Corrosion-resistant brass body — Built to withstand prolonged contact with hot water, including solar systems up to 100°C.
- Low 5W power consumption — Can be powered directly by a solar panel or 12V battery without significant energy drain.
- Integrated removable filter — Protects the internal membrane from sediment and can be cleaned in under 2 minutes without special tools.
- Wide compatibility — Suitable for cold water, hot water, air, and low-viscosity fluids at pressures between 0.02 and 0.8 MPa.
Performance and Specifications
The 12V DC / 5W electromagnetic coil activates the membrane in less than a second — opening when powered and closing when the power is cut. The brass body supports operating pressures between 0.02 and 0.8 MPa and temperatures from 0°C to 100°C, making it ideal for hot water circuits in solar thermal setups. The ABS protective cover shields electrical connections from moisture and dust, while the removable filter prevents blockages without the need to dismantle the valve.
| Parameter | Value / Detail |
|---|---|
| Valve Type | Normally Closed (NC) |
| Connection Thread | ½ inch |
| Dimensions | ~ 5 x 8.5 x 8 cm |
| Operating Temperature | 0 – 100 °C |
| Operating Pressure | 0.02 – 0.8 MPa |
| Power Supply | 12V DC, 5W |
| Duty Cycle | 45 minutes per cycle |
| Body Material | Brass |
| Cover Material | ABS |
| Filter | Removable, easy to clean |
| Recommended Applications | Water, air, solar thermal systems |
Package Contents
- 1 x 12V DC Solenoid Valve, ½ inch, Normally Closed
- 1 x Integrated removable filter
- 1 x ABS protective cover for electrical connection
Frequently Asked Questions
Does the solenoid valve work with AC or only DC?
This model is designed exclusively for 12V DC (direct current). Connecting it to an AC power source will damage the coil.
Can it be used for hot water in solar thermal panels?
Yes, it supports temperatures up to 100°C, making it suitable for domestic hot water systems and solar thermal panels.
What does “Normally Closed (NC)” mean?
It means that without power, the valve remains closed and blocks the flow. It only opens when supplied with 12V DC, providing safety in the event of a power cut.
Can it be used for gas or fuel?
No. This model is intended exclusively for water, air, and low-viscosity liquids. It is not certified for gases or flammable fluids.
Does the mounting direction matter?
Yes. There is an arrow on the valve body indicating the correct direction of flow. Mounting it backwards may prevent the valve from functioning correctly.
How long can it operate continuously?
The recommended duty cycle is 45 minutes, after which a cooling period is advised to prevent the coil from overheating.
Photo Gallery
Reviews
There are no reviews yet.