Direct-operated solenoid valve 070x40N series

3-wayNONC

Direct drive 3-way vacuum solenoid valves These direct drive three-way, two-position vacuum solenoid valves feature conical shutters servo-controlled by the vacuum. They are normally closed as standard, but they can be supplied normally open upon request. They are composed of an anodised aluminium body where the connections are located, two silicone shutters assembled onto a stainless steel stem and a membrane in special reinforced compound. An actuator activated by an electric coil manages the vacuum at the servo-control. The operating principle of these solenoid valves is based on the pressure differential between the vacuum pump or generator and the pressure of the suctioned air. By addressing this “differential pressure” to the servo-control via the actuator, the shutters can be controlled without compressed air or springs. Due to their operating principle, they are not recommended on plants with rough vacuum levels (below 850 absolute mbar, equal to 15 % vacuum). The lack of springs, frictions and internal dynamic stresses favours a high response speed and guarantees long lasting operation. The standard electric coil is fully plasticised with synthetic resin, tight execution, insulation class F (up to 155°C) compliant with VDE standards, with 6.3 mm three-terminal electrical connections in compliance with EN 175301-803 (ex DIN 43650). Protection degree IP 54; IP 65 with connector inserted. Tolerance permitted on the nominal voltage value: ±10%. Maximum absorption: 20 V.A. with AC and 18 W with DC.