Распределители тарельчатые, прямого действия, с электромагнитным управлением SED 10…XN

Description Size 10 Component series 1X Maximum operating pressure 350 bar Maximum flow 40 l/min Area of application in accordance with the Explosion Protection Directive 2014/34/EU: II 3G; II 3D Area of application according to technical rules EAC TR CU 012/2011: II 3G; II 3D Type of protection of the valve solenoids: – Ex ec IIC T3 Gc according to EN 60079-7 – Ex tc IIIC T140°C Dc according to EN 60079-31 Features 3/2- or 4/2-way version Porting pattern according to ISO 4401-05-04-0-05 Wet-pin DC solenoids Safe switching also with longer standstill periods under pressure Solenoid coil can be rotated by 90° Electrical connection with individual connection With manual override, optional Product description 3/2 directional seat valve General information Directional valves of the type SED are direct operated directional seat valves with solenoid actuation. They control start, stop and direction of flow. Directional valves basically comprise the housing (1), the solenoid (2), the valve seats (7) and (11) and the control spool (4). The manual override (6) allows for the switching of the valve without solenoid energization. Basic principle The initial position of the valve (normally open "UK" or normally closed "CK") is determined by the arrangement of the spring (5). The chamber (3) behind the control spool (4) is connected to port P and sealed against port T. Thus, the valve is pressure-compensated in relation to the actuating forces (solenoid and spring). By means of the control spool (4), the ports P, A and T can be loaded with the maximum operating pressure (350 bar) and the flow can be directed into both directions (see symbols). In the initial position, the control spool (4) is pressed onto the seat (11) by the spring (5), in spool position, it is pressed onto the seat (7) by the solenoid (2). The flow is blocked. Seat valves can be used according to the symbols and the related operating pressures and flows (see "Performance limits"). Type M-3SED 10 UK... Type M-3SED 10 CK... Throttle insert "...B" The use of a throttle insert is required when, due to prevailing operating conditions, flows occur during the switching processes, which exceed the performance limit of the valve. 1) Seal ring 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 operated. The spring (5) holds the control spool (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 (8), which is thus unloaded to the tank. The pressure applied via P now pushes the ball (9) onto the seat (10). Now, P is connected to B, and A to T. Transition position: Upon actuation of the main valve, the control spool (4) is shifted against the spring (5) and pressed onto the seat (7). During this, port T is blocked, while