SPOOL VALVES551-552-553.pdfVIP

2 4 2 4 2 4 SPOOL VALVES 12 12 12 14 3/2 3 5 3 5 3 5 1 1 1 2 4 2 4 2 4 5/2 12 10 12 14 pilot operated or air operated, spool type 12 14 3 5 3 5 3 5 5/3 1 single/dual solenoid or air 1 1 Series aluminium body, “NAMUR” style, 1/4 to 1/2 551-552-553 FEATURES ● ASCO/JOUCOMATIC solenoid valves satisfy all relevant EC Directives ● The monostable spool valves, series 551, have T ÜV certified IEC 61508 Functional Safety data and can be used up to SIL 4/AK 7 ● The spool valves have threaded port connections and “NAMUR” style interface ● The same spool valve can be adapted for 3/2 NC or 5/2 functions for controlling double-acting and single-acting actuators ● All the exhaust ports of this spool valve are pipable, providing better environmental protection, particularly recommended for sensitive areas such as clean rooms, and applications in the pharmaceutical and food processing sectors ● The valves offer environmental protection against the ingress of liquids, dusts or any other fore