ASCO Water Valve EF8210G003 Solenoid Valve Explosion-proof Water Valve

This 1/4-inch single-coil solenoid valve series is designed based on the pilot-operated principle. A low-power solenoid coil controls a pilot valve, which in turn utilizes the medium’s pressure differential to actuate the main spool. This efficient configuration enables a small coil to manage relatively large flow rates, making it ideal for applications requiring frequent switching.

Featuring a single-coil design, the valve operates by energizing and de-energizing the single solenoid coil. Once de-energized, a spring mechanism automatically returns the valve to its original position. This straightforward and dependable control mechanism is especially suited for single-acting actuator applications.

The valve body is equipped with standardized 1/4-inch NPT or BSP threaded ports. Its compact build allows for easy installation in environments where space is limited. The small footprint also makes it perfect for integration within control panels or pneumatic circuits across a wide range of automation equipment.

Constructed from either brass or 316L stainless steel, the valve body caters to diverse industrial needs. Brass options provide excellent pressure tolerance up to 25 bar, suitable for general purpose industrial settings. Stainless steel variants offer superior corrosion resistance, making them ideal for harsh environments, including chemical processing, food industry applications, and marine usage.

Employing a unique sealing system that combines a T-shaped seal with a flexible O-ring, these valves achieve bubble-tight sealing and outstanding resistance to dirt contamination. This advanced sealing design supports millions of operational cycles, ensuring exceptional durability and reliability over long service periods.

The solenoid coil is engineered for low energy usage, with certain models consuming only between 1.5W and 2.5W, which contributes to significant energy savings. Multiple voltage options are available, including DC24V and AC220V, ensuring compatibility with PLCs and other automation control systems. Protection grades of IP65 and IP67 provide dust-tight and water jet resistance, making these valves suitable for challenging industrial environments.

Designed for quick operation, the valves achieve opening times of 15 milliseconds or less and closing times within 20 milliseconds. Their robust construction supports a design life exceeding 5 million cycles, with premium models capable of exceeding 100 million cycles, fulfilling the requirements of high-frequency start-stop applications.

Equipped with a manual reset device or manual operator as standard, the valve facilitates commissioning, maintenance, and emergency manual operation. This feature allows the valve to function without electrical signals, enhancing overall safety and system maintainability.

These valves accommodate various installation methods, including direct inline piping and direct mounting on pneumatic actuators with standard NAMUR interfaces. Installation orientation is unrestricted, enabling versatile positioning tailored to spatial constraints at the installation site.

These systems are extensively applied in automated production lines, including packaging machinery, assembly equipment, and material handling systems. They efficiently control single-acting cylinders, pneumatic grippers, and various other actuators to perform essential functions such as clamping, positioning, and pushing.

Acting as fundamental control elements within pneumatic systems, these components handle switching and directional control tasks in air compressor stations, pneumatic tools, compressors, and related devices. The 1/4-inch port size makes them ideal for small to medium-sized pneumatic circuits, offering flow rates typically between 700 and 860 liters per minute at 6 bar pressure, which satisfies the requirements of most pneumatic actuators.

In pulse jet systems used for dust collection, these valves manage the rapid release of compressed air for continuous filter cleaning online. Additionally, they are implemented in valve automation for environmental protection facilities, such as those involved in wastewater treatment and exhaust gas management.

These devices are well-suited for energy sector applications, including controlling boiler feed valves, gas pipeline safety shut-off, and burner operation. Certain models come with ATEX and IEC Ex explosion-proof certifications, allowing them to be safely employed in hazardous environments such as petrochemical plants and propane control systems.

Stainless steel variants meet stringent sanitary standards, making them appropriate for applications demanding high cleanliness, including food processing, beverage filling, and pharmaceutical equipment. The sealing materials, available in EPDM or Viton, are designed to be compatible with food-grade substances and to withstand rigorous cleaning and sanitization processes.

In automotive assembly lines, these components are utilized in welding fixtures, painting apparatus, and assembly stations to control pneumatic tooling and auxiliary devices. Low-power models are particularly advantageous for integration with PLC systems, aligning with the automotive industry's expectations for dependable performance and optimized cycle times.

For hazardous locations, models certified with ATEX, IEC Ex, UL, and other international explosion-proof standards are suitable for environments with flammable substances, such as petrochemical and gas-related settings.

Certain models are designed to operate efficiently in extremely cold conditions, functioning reliably in temperatures as low as –60°C. These are ideal for cold storage, outdoor installations, and other low-temperature applications.

High-temperature variants can handle steam and hot water systems with media temperatures reaching up to 99°C (210°F).

For corrosive media, stainless steel bodies combined with corrosion-resistant seals are used in controlling mildly acidic, alkaline, and other corrosive fluids.