Description Specifications Literature Description The ASCO 8551 Series are 3-way or 4-way, 5 ported 2 position piloted spool type single or dual solenoid valves designed for air or inert gas service. Valves are made of rugged anodized aluminum. A built-in manual operator allows manual operation when desired or during an electrical power outage. Each valve may be used for 3-way (normally closed) or 4-way operation by using the appropriate flow plate provided. Flow plates are marked (3/2) for 3 Ports, 2 Positions (2-way operation) or (5/2) for 5 Ports, 2 Positions (4-way operation). These valves are supplied with all necessary hardware for a NAMUR direct mount installation i.e. flow plates, gaskets, mounting screws, and a locating set screw.Special Features:Compact Spool Valve convertible from 3/2 to 5/2 with flow platesMount directly to actuators with NAMUR interface per VDI/VDE 3845Single and dual solenoid constructions availableIntegral Breather Block vents to spring side of actuator to exhaust, preventing corrosion of the actuatorUnique design combines hard T-seals and flexible o-rings, provides bubble-tight shutoff, resistance to dirt and multimillion cycle life controlling air or inert gasLow Power and Intrinsically Safe construction available State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Product SpecificationsAC/DC:ACInlet Pipe Size (NPT):1/4 inOrifice Size:1/4 inLead Length:18.00 in - 45.72 cmBody Material:AluminumCv:0.7 CvWatt Rating 60 Hz:10.10 W Literature & Docs Product Specifications Technical Drawing Accessories