quick release valve
... 继动阀 relay valve 快放阀 quick release valve 安全继动阀 safety relay valve ...
quick exhaust valve
quick release valve ; QRV
快放阀是用来调节输入和输出压力的比值使在较低的制动减速度时，减少前轴的制动气压.避免前轮制动时抱死.从而改善整车的制动性能。
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