ASCO™ 327 Series 3/2-Way Direct-Acting Solenoid Valve | Zero Minimum Pressure, High Flow Pilot Valve

The ASCO™ 327 Series is a high-flow, direct-acting solenoid valve designed for reliable 3/2-way directional control requiring zero minimum operating pressure. Its unique balanced poppet structure delivers significant flow with minimal power consumption, making it an exceptionally efficient and versatile pilot valve solution. Engineered for durability, it features PTFE guide rings and graphite-filled seals to reduce friction and prevent sticking, ensuring a long service life.

Purchase details

This robust valve is built to perform in demanding settings and is ideal for controlling actuators, piloting larger process valves, and handling critical applications in industries like power generation, refining, and chemical processing.

Key Features & Benefits

Zero Pressure Operation: Starts reliably from zero bar, ensuring operation even in low-pressure systems or at startup.
High Flow, Low Power: The balanced poppet design achieves a high flow rate (Cv) while consuming low wattage, optimizing energy use.
Extended Service Life: PTFE guide rings and graphite-filled seals minimize wear and prevent valve sticking for millions of reliable cycles.
Rugged & Corrosion-Resistant Construction: Available with brass or stainless steel bodies (including 316 stainless steel) for use with various media and in corrosive environments.
Enhanced Safety Options: Models feature safety features like a tamper-proof, no-voltage-release manual reset.
Global Compliance: Holds multiple certifications (e.g., ATEX, IECEx, UL, CSA) and high ingress protection ratings (IP66/IP68) for use in hazardous locations worldwide.

Technical Specifications

Attribute Category	Specification Details
Valve Type / Function	3/2-Way (3-port, 2-position), Direct-Acting
Common Model Series	327 (or 8327), 327C (or 8327C)
Body Material	Brass or Stainless Steel (e.g., 316L)
Media	Air, Inert Gases, Light Oils, Water
Port Size & Type	Common: 1/4″ NPTF or G (BSPP). Other sizes may be available.
Flow Coefficient (Cv)	Varies by model. Example models: ~0.45 to 0.52 Cv. 327C Series: up to 1.1 Cv.
Operating Pressure Range	Common: Up to 10 bar (145 psi). Extended: Some models up to 16 bar.
Temperature Range	Standard: -25°C to +65°C. Extended: Some models from -40°C to +180°C.
Coil Voltages	Wide range available: 24VDC, 120VAC, 240VAC, etc..
Coil Power	Low power design, typically from 3W to 21W.
Operating Environment	Rated for indoor, outdoor, and hazardous locations.
Standards & Approvals	ATEX, IECEx, UL, CSA, NEMA types (model dependent). High ingress protection (IP66/IP68) on 327C series.

Typical Applications

The ASCO 327 Series excels in applications demanding reliability from zero pressure:

Process Valve Piloting: Primary use for controlling the pilot stage of larger diaphragm or piston-operated process valves.
Power Generation & Refining: Controls air, water, or inert gases in critical systems.
Chemical Processing: Handles various media in automated processes where corrosion resistance is key.
Industrial Machinery: Provides reliable directional control for actuators and air circuits in various equipment.

Why Choose the ASCO 327 Series?

For over a century, ASCO by Emerson has set the standard for fluid automation. The 327 Series embodies this legacy by offering a proven, energy-efficient, and robust solution for critical pilot and control applications. Its ability to operate from zero pressure, combined with high flow and global safety certifications, ensures maximum uptime and safety in your most demanding operations.

For more information, technical datasheets, or to discuss your specific application requirements for the ASCO™ 327 Series 3/2-Way Solenoid Valves, please contact the sales team at Kateteco. We are here to help you select the optimal valve solution.

Have questions about model selection or custom options? Reach out to the Kateteco sales team today.

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