Imagine scorching summer days when farmland desperately needs continuous water supply. Suddenly, a power outage strikes, bringing automated irrigation systems to an abrupt halt. As crops face the threat of drought, farmers watch helplessly as their fields dry up. However, with normally open solenoid valves, this scenario becomes a thing of the past.

These valves act as faithful guardians of farmland, continuing to supply water even during power interruptions. They remain open when de-energized, only closing upon receiving specific commands, thus achieving precise fluid control and maximizing water efficiency.

Universal solenoid valves are mechanical devices that use electromagnetic effects to control fluid flow. When electric current passes through the coil inside the valve body, it generates a magnetic field that moves the plunger, changing the valve's open/closed state. These valves are widely used to control various fluids including water, air, oil, and gas, making them indispensable components in automated control systems.

Functioning as the "nerve center" of automation systems, they receive and precisely execute commands to control fluid flows, enabling complex automated operations. Whether in industrial production lines or smart home systems, universal solenoid valves play crucial roles.

Thanks to their compact size and easy controllability, universal solenoid valves serve important functions across numerous fields:

• Automotive Industry: In fuel injection systems, solenoid valves precisely control fuel injection quantities, improving combustion efficiency and reducing emissions.
• Home Appliances: In refrigeration systems, they regulate refrigerant flow to maintain optimal temperatures.
• Industrial Machinery: They control pneumatic or hydraulic systems in production lines, enabling automated operations.
• Agricultural Irrigation: In automated irrigation systems, they manage water flow for precise irrigation and water conservation.

The distinctive feature of normally open solenoid valves is their default open state when de-energized. When power is applied, the generated magnetic field drives the plunger downward to close the valve. This rapid and reliable process ensures precise fluid control.

This design proves particularly valuable in critical applications. For instance, in fire protection systems, normally open valves ensure water discharge during power failures. In medical equipment, they guarantee uninterrupted medication delivery in emergencies.

Proper selection and installation are crucial for optimal performance:

• Install with the coil facing upward to prevent debris entry
• Install filters upstream to remove fluid contaminants
• For high-temperature environments, specify heat-resistant materials
• Match voltage specifications (AC/DC) to power supply
• Consider system pressure ranges and fluid characteristics
• Note flow direction indicators on valve bodies

High-quality materials ensure reliability and durability:

• NBR seals for oil resistance and durability
• Brass sleeves for conductivity and corrosion resistance
• Stainless steel plungers for longevity
• Operating temperature range: -10°C to +90°C
• Socket-type coil connections for easy maintenance

Emerging trends include:

• Integration with sensors for intelligent control
• Miniaturization for space-constrained applications
• Modular designs combining multiple functions
• Energy-efficient operation
• Environmentally friendly materials