Subject to change without notice VALVE AUTOMATION SYSTEMS The single solenoid control is continuously rated, and in the event of electrical failure the actuator returns to the clockwise (normally valve closed) position; by mechanical spring in case of single acting; and air in case of double acting versions. The normally 1/4" ported valve has a high kv value, allowing fast operating times. The assembly is waterproof to IP65. A local manual operation facility is provided as standard. Speed controllers can be fitted as an option. WWW.EL-O-MA TIC.COM Selector plate for 5/2 - 3/2 function General Specification: Make Series Type Material housing endcaps option Air pressure Lubrication Temperature Air entry G1/4" Speed control (optional) Electrical entry Pg 9 Asco 551 5/2-3/2 Aluminium anodized Glass-filled polyamide Stainless Steel 2 to 8 bar Not necessary -25° to 60°C (optional -40°C) Power Voltages AC : 2.5W DC : hot : 2.5W / cold : 3W 24V DC 24, 115 or 230 VAC (50Hz) Other voltages and 60Hz on request : G 1/4" : 0.6 (m3/h) Speed control (optional) Description Flame proof Intrinsically Safe Increased safety/ Encapsulation Entry 1/2" NPT PG11 Cable gland Cable gland Hazardous area executions : Manual override Part number AC/DC Electrical entry Enclosure Class Operating times in sec. (at 6 bar with average load) 0.4 0.5 0.6 0.9 1.3 2 3 5 Specify voltage If local manual operation is required on hazardous area executions,add MO to the part number, i.e. : NF G551B401 MO Depending on ambient temperature Operating times are dependent on load. EL-O-MATIC ACTUATORS WITH ASCO SOLENOID VALVES For general purpose solenoid control the Asco solenoid valve is fixed directly to the NAMUR interface on the side of the actuator (E12 requires adaptor plate). The valve is a universal type, (5/2 or 3/2) and can be used on double acting or spring return actuators by simply rotating the sealing plate.