ASCO™ 320 Series 3-Way Solenoid Valves | Direct-Acting, 0-Pressure Operation, for Analysis & Dust Collector Systems

The ASCO™ 320 Series is a robust and versatile line of 3-way (3/2) direct-acting solenoid valves engineered for a wide range of demanding applications. Designed for reliability and long service life, these valves excel in environments requiring wide voltage compatibility, resistance to harsh conditions, drip-tight control, and millions of maintenance-free cycles. They are a preferred choice for critical tasks in analysis and diagnostic equipment, dust collector control systems, life sciences, stamping rooms, and metal stamping.

Purchase details

Key Features & Benefits:

True Zero-Pressure Operation: Unlike many pilot-operated valves, the direct-acting design of the 320 Series requires no minimum pressure differential to function, enabling reliable operation from vacuum conditions up to full system pressure. This makes it ideal for system start-up and low-pressure control scenarios.
Exceptional Longevity: The long-life versions are engineered to eliminate metal-to-metal contact friction. In dry air or gas applications, this design can achieve an impressive service life of up to 20 million cycles, easily handling rapid cycling or continuously energized duties.
Built for Harsh & Hazardous Duty: Models designed for severe environments offer low power consumption and fast valve/actuator shutdown. The series carries major international safety and explosion-proof certifications, including UL, CSA, ATEX, and IECEx, ensuring compliance for global installations. Many models also feature a high IP65 protection rating (EN 60529) for resistance against dust and water jets.
Maximum Flexibility & Easy Installation: With all NPT threads housed within the valve body, the 320 Series allows for easy, direct in-line piping. The valves can be installed in any orientation without affecting performance, providing maximum flexibility for system design and space-constrained layouts.

Typical Applications:
The 320 Series is ideally suited for directional control in:

Dust Collector and Pulse Jet Control Systems
Analytical and Diagnostic Equipment
Life Sciences and Medical Device Manufacturing
Industrial Automation (Stamping Presses, Pneumatic Actuator Control)

Product Specifications

The following table summarizes the key technical attributes of the ASCO™ 320 Series 3-Way Solenoid Valves. Specific parameters may vary by model configuration.

Attribute	Specification
Valve Function	3-Way, 3/2 (Normally Closed, Normally Open, Universal)
Actuation Type	Solenoid, Direct-Acting
Body Material	Brass or Stainless Steel (e.g., AISI 303)
Seal Materials	Standard: NBR (Nitrile). Optional: FPM (Viton®), EPDM, CR, PTFE.
Compatible Media	Air, Inert Gases, Water, Light Oils
Port Sizes	1/8″ or 1/4″
Port Type	NPT or G ISO228/1 (BSPP)
Flow Coefficient (Kv)	Ranges from 0.04 to 0.43 Kv
Maximum Operating Pressure	Up to 34.5 Bar (500 PSIG)
Operating Pressure Differential	0 Bar to maximum rating (Zero-Pressure Operation)
Fluid Temperature Range	Standard: -20°C to +90°C. Varies with seal material.
Maximum Fluid Viscosity	65 cSt (mm²/s)
Response Time	Typically 5 to 25 ms
Coil Voltage Options	Wide range available: 24VDC, 48VDC, 24VAC, 48VAC, 115VAC, 230VAC / 50Hz.
Coil Power / Class	Example: 11.6W (FT Class). Options for low-power models available.
Electrical Connection	Various options: Spoon terminals (EN 175301-803), M20 cable gland, 1/2″ NPT conduit.
Ingress Protection (IP)	IP65 (EN 60529) standard on many models.
Approvals & Certifications	UL, CSA, ATEX, IECEx. Class I, Division 2 coils available.
Installation	Any position.

For detailed technical datasheets, CAD models, or to discuss the specific model best suited for your application (such as the EF8320G176MBAC24/60D or SCB320 series), please do not hesitate to contact us.

For further information, precise model selection, or pricing, please contact the sales team at Kateteco. We are here to provide expert support for your fluid control projects.

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