Combination valve esp. for braking unit with large vacuum requirement - is operated by solenoid in electronic circuit e.g. antilocking system of motor vehicle

摘要

The valve seat (9) is fixed at a moving part (12) which, together with the non-return valve (8), is lifted from a second valve seat (14) formed by the housing (1) so that, in addition to the non-return valve (8), a flow duct of large cross-section is made available. The lifting of the moving part (12) from the second valve seat (14) is carried out by a solenoid (17). The solenoid is a component part of an electric circuit, e.g. an anti-brake locking system. A further valve (23) is moved simultaneously with the moving part (12) by the solenoid (17) which is independent from the non-return valve (8) and is a bridging valve (11) consisting of the moving part (12) and the second valve seat (14). Further valves can be moved simultaneously with the moving part (12) by the solenoid. USE/ADVANTAGE - Combination valve which fulfills requirements for fine sensitive non-return valve and large free cross-section without throttling effect.