3/4″ DC 12V Pressure Normal Closed Electric Solenoid Valve 0.02-0.8Mpa COM56, R13

DescriptionWhen you are designing industrial IoT agriculture nodes or setting up automated irrigation systems, sensing the environment is only half the battle; you also need to physically react to it. This 12V DC Solenoid Valve bridges the gap between your digital logic and the physical world, allowing your microcontrollers to turn standard water pipes on and off on command.Whether you are prototyping a smart watering dashboard to combat dry seasons, or demonstrating electromechanical actuation during the Electronics Bootcamp, this valve is a rugged, reliable choice.Understanding “Normally Closed” (NC) LogicFor fluid control, a Normally Closed (NC) valve is a crucial safety feature. It means that when the valve has zero electrical power, an internal spring forces the internal plunger down, completely blocking the water. If your power grid goes down, your system crashes, or a wire gets unplugged, the valve will automatically shut off. It only allows water to flow when an active 12V current is pulling the magnetic plunger upward. This prevents accidental flooding in your greenhouse or workshop.Crucial Note: The Pressure RequirementThis is a diaphragm-style valve. It relies on the actual pressure of the incoming water to help push the internal rubber diaphragm open. It requires a minimum water pressure of 0.02 Mpa (about 2.9 PSI) to function. It is designed to be hooked up to a pressurized municipal water line or a strong pump. It will not work efficiently on low-pressure, gravity-fed systems (like a simple rain barrel with no pump).How to Drive It with a MicrocontrollerAn Arduino or ESP32 cannot power this valve directly—the valve requires 12V and draws a significant amount of current (typically around 300mA – 500mA). You must use an intermediate component, such as a 5V Relay Module or a high-power MOSFET. Pro Tip: Because the solenoid is a massive inductive coil, always ensure your circuit includes a flyback diode across the valve’s terminals to protect your electronics from voltage spikes when the valve snaps shut!Key Features:Standard Pipe Threads: The 3/4″ male threaded input and output make it easy to adapt to standard PVC plumbing and garden hose fittings.Internal Filter: Features a built-in metal mesh screen on the inlet side to prevent debris, dirt, and rocks from jamming the internal diaphragm.Spade Connectors: The 12V terminals utilize standard 6.3mm male quick-disconnect spade terminals for fast, secure wiring.Technical Specifications:Operating Voltage: 12V DCValve Type: Diaphragm (Servo-assisted)Default State: Normally Closed (NC)Inlet/Outlet Port Size: 3/4″ Male ThreadWorking Pressure: 0.02 Mpa – 0.8 MpaFluid Temperature Range: ~1°C to 75°CSuitable Media: Water and low-viscosity fluids (Not suitable for acid, gas, or thick oils)Ideal Applications:Smart agriculture and automated greenhouse irrigationTouchless sinks and automated fluid dispensing systemsIoT edge computing projects requiring physical fluid actuationMechatronics and plumbing automation educational labsNote: It cannot be used for inflammable gas or fluids. If you want to use the solenoid valve for inflammable gas or fluids, you must buy the EXPLOSION PROOF valve.