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2W21 Direct Acting Stainless Steel Diaphragm Solenoid Valve
The 2W21 Stainless Steel Series is a high-durability direct-acting solenoid valve designed for demanding industrial applications. Constructed from high-grade Stainless Steel (SS304/SS316), this valve offers superior corrosion resistance compared to brass models, making it ideal for controlling slightly corrosive fluids, pure water, and chemicals. Its zero-differential pressure design ensures reliable on/off control in low-pressure systems without clogging.
Features
Featuring a rust-proof stainless steel body and direct-acting diaphragm, this valve delivers reliable zero-pressure start capabilities for corrosive media, water, and air in harsh environments.
✅Corrosion-Resistant Stainless Steel Body: Precision-cast from Stainless Steel (SS304 or SS316) to withstand rust, weak acids, and alkalis, ensuring longevity in harsh or chemical environments.
✅Direct-Acting Zero Pressure Start: The direct-lift diaphragm structure allows the valve to operate from 0 bar (0 psi), providing consistent flow control for gravity-fed and vacuum systems.
✅Broad Chemical Compatibility: Unlike brass valves, the stainless steel construction combined with high-quality seals (Viton/EPDM) allows for safe handling of aggressive media and pure liquids.
✅Normally Closed On/Off Control: Operates as a standard normally closed (NC) valve, providing essential start/stop control for fluid lines and fail-safe operation upon power loss.
✅Robust & Weatherproof Design: The rugged metal body resists oxidation and external damage, making it suitable for installation in damp, outdoor, or corrosive industrial atmospheres.
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Industry Applications
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Water Treatment
Chemical dosing (chlorine, pH adjusters), filtration systems -
Chemical Processing
Acid/alkali transfer, solvent blending lines -
HVAC Systems
Chilled water control, heat recovery units -
Aquaculture
Seawater flow diversion, ozone injection -
Plating Plants
Electrolyte management, waste neutralization
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