Bosch Rexroth M-3SEW10U1X/420MG24N9K4/B15 3/2 directional seat valve

M-3SEW10U1X/420MG24N9K4/B15, manufacturer material number R900086375, is a Bosch Rexroth size 10, 3/2 directional seat valve with direct solenoid actuation and spring return. Symbol U gives de-energized flow paths: P to A; T blocked; when energized: A to T; P blocked.

The G24 coil is rated 24 V DC, with a 30 W catalog power consumption and 100 % duty cycle. K4 uses a DIN EN 175301-803 connector; the mating connector is separately ordered. N9 identifies the concealed manual override. The seal execution is NBR. The port P throttle insert has a documented diameter of 1.5 mm.

For the documented circuit, P and A are limited to 420 bar and T to 100 bar. The maximum catalog flow is 40 L/min, subject to the circuit pressure inequalities and original performance conditions. The three-way circuit requires pP ≥ pA ≥ pT. Port T must remain connected; ports must not be arbitrarily exchanged or closed.

The three-way seat stage has negative overlap, so P, A and T briefly connect during switching. Seat closure does not eliminate transient switching flow. Performance data use HLP46 oil at 40 ± 5 °C, solenoids at operating temperature, 10 % undervoltage and no tank preloading. Any fitted throttle and the actual pressure distribution influence usable flow.

The manufacturer technical reference is RE22075/2009-07, edition 2009-07. Representative manufacturer SEW10 three-way valve photograph; the pictured mating connector is separately ordered.