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Pricelist: Retail Price (B2C) Pricelist
12V DC 1/2 inch Plastic Electric Solenoid Valve Normally Closed (NC) Water Inlet Flow Switch

12V DC 1/2 inch Plastic Electric Solenoid Valve Normally Closed (NC) Water Inlet Flow Switch

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FeatureDetails
Operating Voltage12V DC
Valve TypeNormally Closed (NC)
Inlet/Outlet Size1/2" (Male Thread)
Pressure Range0.02 to 0.8 Mpa
Suitable MediaWater, Low Viscosity Fluids
Operating Temperature1°C - 75°C
Price
₹ 250.00 ₹ 250.00
(Tax included)

Product Description The 12V DC 1/2 Inch Plastic Electric Solenoid Valve is a reliable and efficient component designed for controlling the flow of water and low-viscosity fluids in automated systems. This is a "Normally Closed" (NC) valve, meaning it remains shut when unpowered and opens instantly when 12V DC is applied. Constructed from durable, food-grade plastic with high-quality internal seals, it is perfect for smart irrigation, DIY water dispensers, hydroponics, and industrial fluid control. The standard 1/2 inch threaded connectors allow for easy integration with common plumbing fittings, while the integrated stainless steel filter screen protects the valve from debris.

Key Features

  • Normally Closed Operation: High-safety design ensures flow is cut off during power failures, preventing accidental flooding or wastage.

  • Standard 1/2" Threads: Universal NPT/G-style threads ensure compatibility with standard household and industrial water pipes.

  • Built-in Filter Screen: Features a removable stainless steel mesh at the inlet to prevent sand or sediment from jamming the plunger.

  • Fast Response Time: High-strength electromagnetic coil ensures near-instantaneous opening and closing (under 0.15 seconds).

  • Wide Pressure Range: Optimized to work with standard municipal water pressure (0.02Mpa to 0.8Mpa).

Technical Details

  • Coil Material: Pure copper winding with Class E insulation for superior thermal stability and long-term reliability.

  • Valve Body: High-strength, corrosion-resistant engineering plastic (PP/ABS) designed for liquid handling.

  • Internal Plunger: Features a spring-loaded stainless steel plunger with a high-grade rubber diaphragm for a drip-free seal.

  • Power Consumption: Draws approximately 5W to 8W during operation; requires a stable 12V power source capable of at least 1A peak current.

  • Flow Direction: Directional flow design; marked with an arrow on the body to ensure correct installation for proper sealing.

  • Service Life: Lab-tested for over 200,000 operations without leakage or mechanical fatigue.

  • Interface Pins: Two 6.3mm standard spade terminals for easy connection using crimp connectors or soldering.

  • Inductive Kickback: High-inductance coil design; requires protection diodes when used with sensitive electronics.

  • Mounting Versatility: Can be mounted in any orientation, though vertical mounting (coil on top) is recommended for longest life.

  • Medium Compatibility: Best suited for clean water; not recommended for highly acidic, alkaline, or flammable liquids.

  • Minimum Start Pressure: Requires at least 0.02Mpa (approx. 3 PSI) to fully lift the internal diaphragm.

  • Thermal Protection: Designed for intermittent use; for continuous operation over 4 hours, ensure adequate airflow to the coil.

  • Seal Integrity: Maintains zero leakage under maximum rated pressure (0.8Mpa).

  • Logic Level Interface: Can be triggered via microcontrollers through a relay module or a high-current MOSFET.

  • Standardization: Compliant with common water system standards for home automation and irrigation.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: A standard 9V battery will not work reliably. The solenoid requires high current (up to 600mA) and 12V to generate enough magnetic force to open the valve. Use a 12V 2A DC Power Adapter or a 12V Lead Acid battery.

  • 18650 Cell: You must use at least three 18650 cells in series (3S configuration - 11.1V). A single cell (3.7V) cannot power this module. For portable use, we recommend a 12V UPS/Power Bank circuit.

  • IC & Capacitor Tip: CRITICAL: When controlling this with an Arduino, you must use a 1N4007 Flyback Diode across the valve terminals to prevent the inductive spike from burning your transistors or ICs. Add a 1000uF 25V Capacitor near your power supply to handle the current surge when the valve clicks on.

  • Related Products: We recommend pairing this with our Capacitive Soil Moisture Sensors, 1-Channel 12V Relay Modules, and Arduino Uno R3 for building an automatic garden watering system.

Package Includes

  • 1 x 12V DC 1/2 Inch Plastic Electric Solenoid Valve (NC).

Disclaimer Image is for illustration purpose only 2-3 lines. This valve is directional; ensure the arrow on the body points in the direction of water flow. This valve is NOT a gravity-fed valve; it requires a minimum inlet pressure to function correctly. Ensure all threaded connections are wrapped with Teflon tape to prevent leaks.