PNEUMATIC SOLENOID VALVE Russian patent published in 1998 - IPC

FIELD: transport engineering; pneumatic brake systems. SUBSTANCE: pneumatic solenoid valve has first intake channel 1 connected with first pressure source A, second intake channel 2 connected with second pressure source (Δ), outlet channel 3 connected with chamber C which is kept under controlled pressure, hollow housing 4 in which each part is installed to provide its selective communication with at least one other part. Solenoid valve has also electromagnet 5 secured on housing and including core 5a to set into operation selective communication means, stationary valve 6 and movable valve 7 enclosed in hollow housing to provide opening of stationary valve with movable valve closed and vice versa. These valve are formed by shaft 60, tubular movable stop member 67 and sealing surface 70 acted upon by electromagnet. EFFECT: enlarged operating capabilities and improved reliability. 9 cl, 2 dwg