| 摘要 |
A diaphragm-type pneumatic brake actuator is provided with a closing valve that seals the air pressure line upstream from the diaphragm in response to diaphragm rupture. This isolates the actuator from the pressure line so that the line does not lose pressure and, thus, prevents a diaphragm rupture in one brake actuator from adversely affecting another brake actuator coupled to the same air pressure line.
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