ASCO series 551 Solenoid Valves - 3 way: 3/2 Normally Closed, 4 way: 5/2, 4 way: 5/3 - Closed Center, 4 way: 5/3 - Open Center - 1/4 - Brass, Stainless Steel, Aluminum - Media: Air, Inert Gas. The ASCO Series 551 is a line of compact solenoid spool valves that are ideal for controlling air or inert gas in challenging environments. The valves’ unique design combines hard T-seals and flexible O-rings that provide bubble-tight shutoff, dirt resistance, and multi-million cycle reliability. The 551 Series comes in anodized aluminum, brass, and stainless steel bodies with ¼-inch NPT and BSP connections. It is suitable for the harsh conditions found in chemicals, refining, food & beverage applications and life science processing.

ASCO Series 551 Solenoid Spool Valve Features:
● Available in two versions, mounted directly to actuators with NAMUR interface per VDI/VDE 3845 or threaded to mount on the pipe
● Exhaust ports are pipeable, providing better protection against harsh environments
● DIN, watertight, and explosion-proof solenoids are available for use in mission-critical and hazardous areas
● Low-power constructions are ideal for remote and alternative power locations
● Integral breather block vents to spring side of the actuator to exhaust, preventing corrosion
● Single- and dual-solenoid constructions are available that mount in any position
● Global Ex approvals; ATEX, IEC EX, NEPSI, CUTR, KOSHA, UL, CSA, InMetro
● All ports of NAMUR on the same side for a better water , DUST protection
● Available will all Explosion proof solenoids: Ex d, Ex mb, Ex ia/Ib, Ex e mb, NEMA
● Available in an arctic version, suitable for use in temperatures as low as -60°C
● Compact spool valve convertible from 3/2 to 5/2 with a single flow plate design (551 Series only)

Industries
● Chemical
● Oil & Gas
● Power

We not only sell general service solenoid valves, but also electronically enhanced, miniature, process, dust collector valves & more!
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ASCO Series 551 three-way solenoid Valve - ASCO 8551 Solenoid Valve