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ASCO

ASCO is the pioneering American manufacturer of solenoid valves, having invented the world’s first solenoid valve in 1910 as the Automatic Switch Company. Now part of Emerson’s Discrete Automation portfolio since 1985, it remains the global leader in general-service, process, and pilot-operated solenoid valves, with a catalog of more than 50,000 precisely engineered valves serving process automation, packaging, life sciences, and industrial manufacturing applications worldwide. Flagship product lines include the Red Hat II series and the 8210/8262 general-purpose valve families, recognized industry-wide for rugged reliability and long service life.

These valves are built to meet demanding certification requirements including UL, CSA, ATEX, and IECEx, with materials and seal options engineered for compressed air, water, oil, and steam across a wide temperature and pressure range. As a genuine ASCO supply partner, Seven Star LLC delivers genuine Emerson ASCO solenoid valves to process plants, refineries, and manufacturing facilities across Oman and the GCC, ensuring buyers in Muscat, Sohar, and Salalah receive authenticated valves with full technical documentation.

Browse ASCO products by category: Solenoid Valve.

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ASCO 551 NAMUR Pilot Solenoid Valve Supplied by Seven Star LLC

ASCO 551 Series NAMUR Pilot Solenoid Valve

ASCO

In stock

ASCO 327 Series Solenoid Valve Supplied by Seven Star LLC

ASCO 327 Series Solenoid Valve

ASCO

In stock

ASCO 8210 Series General Service Solenoid Valve Supplied by Seven Star LLC

ASCO 8210 Series General Service Solenoid Valve

ASCO

In stock

ASCO Product Range at Seven Star

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Looking for ASCO parts not listed here, or pricing for a project? Send us the part numbers and quantities. Seven Star LLC sources genuine ASCO products for customers across Oman and the GCC and replies with a formal quotation.
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Frequently Asked Questions

Is ASCO the same company as Numatics or Emerson?
ASCO (originally the Automatic Switch Company) is a solenoid valve brand acquired by Emerson in 1985. In 2016, Emerson merged its ASCO and Numatics businesses to combine solenoid and pneumatic valve technology, but ASCO remains a distinct, recognized product line within Emerson’s Discrete Automation group.
What certifications do ASCO solenoid valves carry?
ASCO valves are certified to UL, CSA, ATEX, and IECEx standards depending on the series, with explosion-proof and corrosion-resistant construction options available for hazardous area and harsh chemical service.
Which ASCO valve series are most commonly used in general industrial service?
The ASCO 8210 and 8262 series 2-way general-service solenoid valves are among the most widely specified, alongside the Red Hat II line, used for air, water, and light oil control in compressors, washers, and automated fluid systems.
Can ASCO solenoid valves be integrated with PLC or DCS control systems?
Yes, ASCO solenoid valves are standard components in automated fluid control loops and are switched directly by PLC, DCS, or relay logic outputs, with coil voltage and enclosure options matched to the control system and area classification.
Does Seven Star LLC supply genuine ASCO valves in Oman?
Yes, Seven Star LLC is a genuine ASCO supply partner delivering genuine Emerson ASCO solenoid valves to industrial and process customers across Oman and the GCC, with full documentation and traceability.