Normally Closed Valve Electric Solenoid Valve Sturdy And Long-lasting Efficient Control For Home Use For Pneumatic SystemsSPECIFICATIONS Brand Name: Keszoox High concerned chemical: None Origin: Mainland China Structure: control Features: *Waterproof Electric Solenoid Valve Coil: This electric solenoid valve coil is designed with waterproof function, reliable performance even in wet environments. *Normally Closed: The solenoid valve coil is normally closed, which means it stays closed when there is no power supply. It provides a secure and stable control for water, oil,