ASCO Solenoid Valve EFG551B401MO/EFG551H402MO Explosion Proof Two Position Five Way Solenoid Valve

Product Description:

The ASCO 551, 553, and 531 series represent compact spool-type solenoid valves designed for diverse industrial applications. Although they share a similar basic design, they differ in specifics such as port sizes and flow capacities, each tailored to distinct operational scenarios. These valves are widely utilized for controlling gases in sectors including chemical processing and the food & beverage industry. The following provides an in-depth overview of the characteristics of each series:

1. 551 Series

Also known as the 8551 Series, the 551 models are 1/4-inch 3-way and 4-way compact solenoid spool valves. They are primarily engineered to manage air and inert gas within demanding and corrosive environments. Their robust design ensures suitability for harsh and hazardous conditions.

• Key Parameters: Operating pressures span from vacuum levels up to 150 psi. They accommodate medium temperatures ranging from -60℃ to 80℃, and support flow values between 0.5 to 1.0 Cv (0.43 to 0.86 Kv). Multiple voltage options are available, including DC voltages such as 6VDC, 12VDC, and 24VDC, alongside AC voltages like 24VAC, 110VAC, and 220VAC, enabling compatibility with various power setups.
• Structure & Materials: The valve bodies are constructed from anodized aluminum, brass, or optionally stainless steel. Port types include G ISO228/1 - G BSPP and NPTF, with connections provided via 1/4-inch NPT and BSP threads. Functionality covers various modes, including 3/2 Normally Closed, 4/2, 4/3 Center Closed, and 4/3 Normally Open. Both single-coil and double-coil configurations are supported with installation possible in any orientation.
• Core Advantages & Applications: Featuring a hybrid sealing design combining hard T-seals with flexible O-rings, these valves deliver excellent sealing and dirt resistance, sustaining reliable operation for millions of cycles. They hold certifications such as ATEX, UL, and CSA for explosion-proof achievement. Typical applications span chemical engineering, oil refining, food & beverage processing, and life sciences.

2. 553 Series

Known as the 8553 Series, the 553 valves are larger 1/2-inch 3-way and 4-way solenoid valves. They offer increased port sizes and enhanced flow capacities compared to the 551 series, while still focusing on air and inert gas control.

• Key Parameters: Operating pressure ranges from vacuum to 150 psi. The flow range significantly improves, covering 2.0 to 6.0 Cv (1.73 to 5.19 Kv). Voltage compatibility mirrors that of the 551 series, suitable for diverse power requirements. They meet an IP65 protection rating and support functional safety loops below SIL3, ensuring superior safety standards.
• Structure & Materials: Construction materials include aluminum, brass, and 316L stainless steel. Ports conform to G ISO228/1 - G BSPP and NPTF standards, with 1/2-inch NPT and BSP thread connections. Installation options include actuator mounting via NAMUR interfaces adhering to VDI/VDE3845 standards, or direct pipe mounting through threaded connections.
• Core Advantages & Applications: The exhaust port is designed to be piped, with NAMUR ports arranged adjacently on one side for enhanced dust and water resistance. Waterproof and explosion-proof, these valves feature low power consumption suitable for remote power delivery. Their robust flow capacity and resistance to harsh conditions make them ideal for chemical processing, refining, and other demanding industrial environments.

3. 531 Series

The 531 Series specializes in safety and reliability, offering products with both explosion-proof and non-explosion-proof designs. They are primarily employed for actuator pilot control within chemical and hybrid industry applications, with notable models such as the SCG531C001MS.

• Key Parameters: The operating pressure spans from -0.95 bar to +10 bar, with an ambient temperature range from -10℃ to +60℃. At 6 bar, the flow rate is rated at 1150 L/min (ANR). Interface size measures G1/4 with a port diameter of 6mm and a flow coefficient of 0.95 m³/h. Common voltage options include 220VAC and 24VDC. Coil power ratings include 6 VA inrush and 3.5 VA holding power.
• Structure & Materials: Valves feature black anodized aluminum bodies, low-friction non-sticking T-seals, polyamide top covers and end caps, as well as internal components made from acetal and aluminum. Electrical connections can be either DIN or metal M12, with NAMUR installation. Exhaust ports utilize threaded interfaces to minimize impurity ingress.
• Core Advantages & Applications: An internal air circulation system prevents moisture penetration into the actuator and valve body, combating corrosion effectively. Compliance with EN60730 safety standards and explosion-proof certifications such as ATEX and IECEx underscore its reliability. Its exceptional cleanliness and stability suit environments with stringent cleanliness demands, including pharmaceutical and food industries, besides actuator pilot control in chemical sectors.

Technical Parameters:

Applications:

The ASCO Solenoid Valve, part of the renowned 551 Manufacturer Series, is a high-performance electromagnetic valve designed for a wide range of industrial applications. With a caliber of 1/4 and a robust aluminium body material, this solenoid spool valve is engineered to withstand demanding environments, making it suitable for both commercial and industrial use. Certified with CE standards, the ASCO Solenoid Valve guarantees reliability and safety, ensuring it meets stringent quality requirements.

This solenoid valve operates efficiently under a nominal pressure of up to 400 Bar and can function in extreme temperature conditions ranging from -60°C to 80°C. Such versatility allows it to be used in diverse scenarios, including hydraulic systems, pneumatic control systems, and automated manufacturing lines where precise control of fluid flow is critical. The ASCO solenoid spool valve’s electromagnetic mechanism ensures rapid and accurate valve actuation, making it an ideal choice for applications requiring quick response times and high durability.

In industries such as automotive manufacturing, oil and gas, chemical processing, and water treatment, the ASCO solenoid valve proves indispensable. Its ability to control the flow of various fluids reliably enhances system efficiency and safety. Additionally, the valve’s compact size and lightweight aluminium construction facilitate easy installation and maintenance, even in tight spaces or complex machinery setups.

Customers benefit from flexible purchasing options with a minimum order quantity of just one unit. Pricing is negotiable, catering to both small-scale buyers and large industrial clients. Packaging is tailored to client requirements, typically shipped in sturdy cartons to ensure product integrity during transit. With a supply ability of 5000 pieces per month and a swift delivery time of 1-7 work days after payment, the ASCO solenoid valve is readily available to meet urgent project demands.

Payment terms are convenient and secure, accepting T/T, Western Union, and Paypal, allowing global customers to transact with ease. Whether you need a reliable solenoid spool valve for new installations or replacement parts for maintenance, the ASCO electromagnetic valve offers unmatched quality and performance for diverse industrial applications.

Packing and Shipping:

The ASCO Solenoid Valve is carefully packaged to ensure it arrives in perfect condition. Each valve is securely placed in a custom-fitted protective casing to prevent damage during transit. The packaging materials are chosen to provide cushioning and support, minimizing the risk of impact or vibration.

For shipping, the product is boxed in sturdy, corrugated cardboard cartons that are clearly labeled with product information and handling instructions. Multiple units are palletized and shrink-wrapped when shipped in bulk to enhance stability and safety.

We partner with reliable carriers to guarantee timely and safe delivery. Tracking information is provided to customers for full shipment visibility. Special shipping options are available upon request to meet urgent or specific delivery requirements.