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

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.