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    • 7. 发明公开
    • Fluid pressure control relay valve apparatus
    • 流体压力控制继电阀装置
    • EP0353003A3
    • 1990-05-23
    • EP89307504.4
    • 1989-07-24
    • BENDIX LIMITED
    • Gibbons, Peter Frederick
    • B60T13/68B60T8/36
    • B60T15/18B60T8/361B60T15/027
    • A fluid pressure control relay valve has a pressure responsive piston (9) having seals (23,24) slidable in respective bores of a housing to define a control pressure chamber (12) on one side and a delivered pressure chamber on the other side, the piston (9) presenting a vent passage (13) and vent valve seat (8a) engageable with a closure member (8) interconnected through a stem with a delivery valve member urged into engagement under a delivery valve seat (5a) the vent valve seat being appreciably larger than the closing valve seat enabling minimal control chamber volume to be pressure-controlled by electropneumatic valve (15,16)
    • 流体压力控制继动阀具有压力响应活塞(9),该压力响应活塞(9)具有可在壳体的各个孔中滑动的密封件(23,24),以在一侧限定一个控制压力室(12),并在另一侧限定输送压力室 所述活塞(9)具有通气通道(13)和通气阀座(8a),所述通气阀座(8a)可与通过杆相互连接的封闭构件(8)啮合,所述闭合构件(8)与输送阀构件相接触,所述输送阀构件在输送阀座(5a) 座椅明显大于关闭阀座,使得最小控制室体积能够被电动气动阀(15,16)压力控制,