Solenoid Valve 12v 1/4 inch (Blue)
π§ Solenoid Valve 12V 1/4" (Blue)
π Overview
The 12V 1/4 inch Solenoid Valve is an electrically controlled valve used to control the flow of liquids (mainly water) using a 12V DC supply.
π Commonly used in:
π° Water control systems
π± Automatic irrigation
π€ Arduino automation projects
πΏ Smart home plumbing
π§ Working Principle
The valve operates using an electromagnetic coil:
β‘ When 12V is applied β coil creates magnetic field
𧲠Magnetic field pulls a plunger β valve opens
β When power OFF β spring returns β valve closes
π Based on Electromagnetism
π Infographic Summary
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β π§ 12V SOLENOID VALVE β
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β π― Controls: Water flow β
β β‘ Voltage: 12V DC β
β π Type: Normally Closed β
β π Size: 1/4 inch inlet β
β π¦ Medium: Water β
β π Operation: Electric β
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π Connection Details
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β Solenoid Valve β
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β Wire 1 β +12V
β Wire 2 β GND
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π Polarity usually does not matter (non-polarized coil)
βοΈ Key Specifications
β‘ Operating Voltage: 12V DC
π Current: ~300β500 mA
π§ Pipe Size: 1/4 inch
π Type: Normally Closed (NC)
π‘ Operating Temperature: 0Β°C β 80Β°C
π¦ Medium: Clean water
π Key Features
π§ Automatic water flow control
β‘ Fast ON/OFF switching
π§ Easy installation
π¦ Compact and lightweight
π Compatible with battery systems
π§ͺ Applications
π± Automatic irrigation systems
π° Water dispensing machines
π Smart home water control
π§ͺ Liquid control in projects
π€ Robotics fluid systems
π Interfacing
Works with:
π΅ Arduino
π‘ ESP32 / ESP8266
π Important:
Use relay module or transistor driver
Do NOT connect directly to microcontroller
π Working Example
π Automatic Plant Watering System:
Soil dry detected π±
Microcontroller sends signal
Relay activates valve
Water flows π§
Soil becomes wet β valve OFF
β οΈ Important Notes
β οΈ Requires driver circuit (relay/MOSFET)
β οΈ Generates heat during long operation
β οΈ Not suitable for high-pressure systems
β οΈ Use clean water to avoid clogging
π Solenoid Valve vs Motor Valve
| Feature | Solenoid Valve | Motor Valve |
|---|---|---|
| Speed | Fast | Slow |
| Control | ON/OFF | Precise control |
| Power Use | High (while ON) | Lower |
| Complexity | Simple | Complex |
π‘ Pro Tip
Always add a flyback diode across the valve
Use relay module for safe control
Install filter to prevent clogging
π Perfect for automation and IoT water control projects
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