3/2 и 4/2 directional seat Клапан с соленоид приводом M-.SEW 10

Description Size 10 Component series 1X Maximum operating pressure 420 / 630 bar Maximum flow 40 l/min Features Direct operated directional seat valve with solenoid actuation Porting pattern according to ISO 4401-05-04-0-05 Blocked port is leak-free closed Reliable switching when under pressure over longer periods of standstill Air-gap DC solenoids with detachable coil (AC voltage possible by means of a rectifier) Solenoid coil is rotatable by 90° Electrical connection as individual connection With concealed manual override, optional Inductive position switch (contactless), optional Product description 3/2 directional seat valve General The directional valve of the M-.SEW type is a directional seat valve with solenoid actuation. It controls the start, stop and direction of flow. It basically comprises a housing (1), the solenoid (2), the hardened valve system (3) and the spool (8) as closing element. 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 spool (8) that is sealed on two sides. The chamber between the two sealing elements is connected to port P. Therefore, the valve system (3) is pressure-compensated in relation to the actuating forces (solenoid or return spring). Therefore, the valves can be used up to 630 bar. Notice! 3/2-directional seat valves feature "negative spool overlap". Therefore, port T must always be connected. That 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. However, this process takes place within such a period of time that it is irrelevant in nearly all cases of use. The manual override (10) allows for the switching of the valve without solenoid energization. Attention! It is to be ensured that the maximum flow indicated is not exceeded! If applicable, a throttle insert for flow limitation is to be inserted (see functional description). The seat arrangement offers the following options: Control spool symbol “ U “ Control spool symbol “C” Type M-3SEW 10 U… 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 (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. The pressure applied via P now pushes the ball (13) onto the seat (14). Now, P is connected to B, and A to T. Transition position: When the main valve is actuated, the spool (8) is shifted against the spring (9) and pressed onto the seat (15). During this, port T is blocked, while P, A, and B are