Распределители тарельчатые, прямого действия, с электромагнитным управлением SEW 10…XE

Description Size 10 Component series 1X Maximum operating pressure 420 bar Maximum flow 40 l/min Area of application in accordance with the Explosion Protection Directive 2014/34/EU: II 2G; II 2D Type of protection valve: – Ex h IIC T4 Gb X according to EN 80079-36 – Ex h IIIC T115°C Db X according to EN 80079-36 Type of protection, solenoid coil: – Ex eb mb IIC T4 Gb according to EN 60079-7 / EN 60079-18 – Ex tb IIIC T115°C Db according to EN 60079-31 Solenoid coil certified according to IECEx Features 3/2- or 4/2-way version For intended use in potentially explosive atmosphere Porting pattern according to ISO 4401-05-04-0-05 Blocked port is tight Safe switching also with longer standstill periods under pressure Air-gap DC and AC solenoids Solenoid coil is rotatable by 90° Electrical connection as individual connection with cable gland With concealed manual override, optional Product description 3/2 directional seat valve General Directional valves of the type SEW…XE are direct operated directional seat valves with solenoid actuation. It controls the start, stop and direction of flow. The directional valves basically comprise a housing (1), the solenoid (2), the hardened valve system (3) and the control spool (8). For proper functioning, the hydraulic system has to be bled properly. Basic principle In the initial position, the control spool (8) is pressed onto the seat by the spring (9) and in spool position by the solenoid (2). The force of the solenoid (2) acts via the angled lever (6) and the ball (7) on the control spool (8) that is sealed on two sides. The chamber between the two sealing elements is connected to port P. Thus, the valve system (3) is pressure-compensated in relation to the actuating forces (solenoid or return spring). Notice: The 3/2 directional seat valves have a "negative spool overlap". Therefore, port T must always be connected. This means that during the switching process – from the starting of the opening of one valve seat to the closing of the other valve seat – ports P–A–T are connected with each other. This process takes, however, place within such a short time that it is irrelevant in nearly all applications. The manual override (10) allows for the switching of the valve without solenoid energization. Make sure that the specified maximum flow is not exceeded. Use a throttle insert for flow limitation, if necessary (see table "Throttle insert, check valve insert"). The seat arrangement offers the following options: Symbol U C Type M-3SEW 10 U…N9XE... 4/2 directional seat valve With a sandwich plate, the Plus-1 plate , under the 3/2 directional seat valve, the function of a 4/2 directional seat valve is achieved. Function of the Plus-1 plate Initial position The main valve is not actuated. The spring (9) holds the ball (4) on the seat (11). Port P is blocked and A is connected to T. Apart from that, one control line is connected from A to the large area of the control spool (12), which is thus unloaded to the tank. T