DFRobot
Solenoid Valve-DN20
A 12V DC motorised solenoid valve with a DN20 (20 mm) bore, designed for controlling water flow in automated projects. The valve integrates a DC motor with a...
A 12V DC motorised solenoid valve with a DN20 (20 mm) bore, designed for controlling water flow in automated projects. The valve integrates a DC motor with a metal reduction gearbox, providing high torque and low noise operation. It withstands up to 1.0 MPa static pressure.
The valve has three control wires: connect the blue wire to positive to open, the red wire to positive to close, and the yellow wire to ground. If power is removed, the valve holds its current position and can also be operated manually.
Key Features
- Motorised Control – DC motor with metal reduction gearbox for reliable open/close operation
- Three-Wire Interface – Blue (open), red (close), yellow (ground)
- Holds Position – Maintains current state when powered off, with manual override
- Sealed Motor – Waterproof design for reliable operation
- Anti-EMI – Electromagnetic interference shielding
Specifications
- Bore Size – DN20 (20 mm / 0.79")
- Rated Voltage – 12V DC
- Rated Current – 100 mA
- Rated Power – 2W max
- Valve Pressure – 1.0 MPa
- Torque – 30–60 kg·cm
- Insulation Resistance – >20 MΩ
- Operating Temperature – –10°C to +50°C
Wiring
- Blue wire – Connect to +12V to open valve
- Red wire – Connect to +12V to close valve
- Yellow wire – Ground (shared)
Ideal For
- Automated irrigation and agriculture
- Smart home water control
- Aquaculture and fisheries
- Arduino and Raspberry Pi water management projects
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- electromagnetic interference
- Electromagnetic interference is unwanted electrical noise from nearby devices, cables, or radio signals that can disturb a signal in a wire. Shielding helps reduce this noise, which matters for network adapters because cleaner signals are less likely to cause unreliable connections or data errors.
- kg·cm
- A torque unit often used for hobby servos, meaning how many kilograms of force the servo can hold at a 1 cm arm length. A higher kg·cm rating means the servo can move or hold heavier loads, but power supply current needs may also increase.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- Torque
- A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.
Find this product in
Supplier page — dfrobot.com
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