The 2W series (DN10-DN50) 2/2-way threaded solenoid valve is an industrial-grade automated fluid shut-off valve designed for general fluid processing pipelines. Configured as a normally closed (NC) valve, its operational sequence is "opens when energized, closes when de-energized." The paramount technical attribute of this series is its semi-direct acting (step-by-step direct-acting) structural design, which supports zero differential pressure (0 bar) lightweight startup. By linking the electromagnetic moving plunger directly to the main diaphragm assembly, this valve combines the zero-pressure functionality of direct-acting valves with the high-flow capability of pilot-operated valves. The valve body is constructed from premium brass or high-performance SS316 stainless steel, fitted with standard female pipe threads to accommodate space-restricted and high-rigidity manifold layouts. Powered by heavy-duty electromagnetic coils and precision self-balancing diaphragm components, it performs reliably across a nominal pressure spectrum of 0 to 10 bar and operating temperatures from -20°C to 65°C, delivering remote automated control and tight shut-off for universal fluids.

Product Image:2/2-Way Threaded Solenoid Valve (Normally Closed, 2W Series)

Semi-Direct Acting Mechanism & Zero-Pressure Reliability: Utilizing a linked dual-layer diaphragm layout, it operates effortlessly at zero pressure drop (0 bar) or under gravity-fed conditions without requiring medium pressure assistance, flawlessly eliminating operational failures in low-pressure pipelines.

0 to 10 bar Universal Pressure Spectrum & High Flow Rates: Fluid-dynamics optimized valve cavity and large flow paths significantly enhance the flow coefficient (Kv value), providing extremely low flow resistance and stable isolation under low-to-medium pressure general.

Broad Media Compatibility: Internal sealing Boundaries and diaphragm elastomers are structurally enhanced to perfectly handle frequent control of water, general liquids, gases, and light oils (kinematic viscosity ≤20cst).

Dual Body Configurations (Brass / SS316): Available in high-density brass (cost-effective general-purpose layouts) and precision cast SS316 stainless steel (ideal for light chemical corrosion, high-purity media) to resist harsh environments.

Rigid Threaded Connection with Robust Build: Spanning full sizes from DN10 to DN50, standard pipe threads minimize structural distortion and joint weeping caused by intense mechanical fluid vibrations.

Structure Diagram:2/2-Way Threaded Solenoid Valve (Normally Closed, 2W Series)

Material List

Flow Curve Chart

Specification Sheet

The models in the table are plastic-encapsulated coil AC220V, connection thread is G; Sealing material: blank is NBR, E is EPDM, V is VITON.Note: For solenoid valves using ES coils, EPDM or VITON seals can be selected, but the fluid temperature must be ≤ 80℃.Note 1: Fluid temperature for ES coil solenoid valves ≤ 80℃, fluid temperature for Ex explosion-proof coil solenoid valves is -10 to 60℃.Note 2: When the pressure of this series is lower than 50KPa, it is recommended to use a special low-pressure solenoid valve configuration and please specify the working pressure.

Outline Diagram:2/2-Way Threaded Solenoid Valve (Normally Closed, 2W Series)

Outline Dimension Table   （Unit:mm）

Due to the rapid R&D iteration speed of valve products from China kaiweixi Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!