3/8" Electric Solenoid Water Valve, DC 12V Brass Body Normally Closed, Zero-Pressure Direct Drive for Water Air Oil Gas, NPT Female Threaded Solenoid Valve, 2W-040-10

Reliable Fluid Control for DIYers and Industrial EngineersWhen your project requires a dependable "gatekeeper" for liquids or gases, the Wengart Electric Solenoid Water Valve 2W-040-10 delivers industrial-grade performance in a compact package. Engineered with a Direct Drive mechanism, this valve does not require a minimum pressure differential to operate, making it the go-to choice for low-pressure Water, Air, Oil, and Gas applications where other valves fail to engage.Built to Handle the Pressure (and the Lack of It) From automated garden irrigation to complex pneumatic setups, this Normally Closed valve stays shut until you say otherwise. The DC12V operation makes it exceptionally safe for mobile and outdoor use, integrating seamlessly with RV batteries and solar power grids. The Brass Body is precision-machined to ensure a long service life, providing a professional-grade solution for shut-off control in any 3/8" piping system.Technical SpecificationsModel: 2W-040-10Operation Type: Direct Drive (Zero Differential)State: Normally Closed (N/C)Pipe Size: 3/8" NPT Female ThreadVoltage: DC 12VWorking Pressure: 0 - 1.0 MPa (0 - 145 PSI)Material: High-Quality Brass Body / NBR SealMedia: Water, Air, Gas, Low-Viscosity OilFrequently Asked Questions (Ensuring the Right Fit)Q: Can this be used for a gravity-fed rain barrel? A: Yes! Because this is a Direct Drive valve, it will open even with zero water pressure. This is a significant advantage over "pilot-operated" valves commonly found elsewhere.Q: Does it get hot if left on for hours? A: Like all solenoid valves, the coil generates heat during continuous use. We recommend it for intermittent duty cycles. If you need it to stay open for 24/7, consider a "Normally Open" version or a motorized ball valve to prevent overheating.Q: Is there a specific "in" and "out" side? A: Yes. Please check the arrow on the Brass Body to ensure proper flow direction. Installing it backward may lead to leaking or failure to close.

• Zero-Pressure Direct Drive: Experience reliable flow control even in gravity-fed systems. Unlike pilot-operated valves that require high pressure to open, this Direct Drive solenoid valve operates flawlessly from 0 PSI up to 145 PSI. It’s the perfect solution for rain barrels, low-pressure irrigation, and RV water tank management.
• Fast-Acting Normally Closed Logic: Ensure safety and precision in your automated projects. This 2-Way 2 Position valve remains securely closed when de-energized, preventing any accidental leaks. Upon receiving a DC 12V signal, it opens instantaneously, making it ideal for high-frequency switching in Air, Oil, and Gas applications.
• Corrosion-Resistant Solid Brass: Built for longevity in demanding environments. The rugged Brass Body provides superior durability compared to plastic alternatives, offering excellent resistance to rust and chemical degradation. It ensures a leak-free seal for a wide range of compatible fluids, including water and light oils.
• Universal 3/8" NPT Compatibility: Designed for easy integration into North American plumbing. Featuring precision-cut 3/8" Female NPT threads, this valve provides a standard, airtight fit for common fittings. Whether you're building an automated plant watering system or a fuel line shut-off, installation is straightforward and secure.
• Efficient Heat-Dissipating Coil: Engineered for consistent performance. The high-quality 2-Postion electromagnetic coil is optimized to handle standard operation cycles with minimal thermal buildup. The simple 2-Wire configuration allows for quick connection to battery systems, solar controllers, or 12V power adapters for immediate use.