The vent valve comprises an air vent screw, a spring and a valve ball which leans against the channel under the acting force of the spring.

所述排气阀包括一排气螺钉、 一弹簧、一钢球，阀球在弹簧作用力下抵靠通道上。

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Supply oil to the fuel oil system by hand oil supply pump and release all the air through the injector pump and fuel injector's vent screw until the oil overflows and no more air found.

采用手压输油泵向燃油系统供油、通过喷油泵及喷油器放气螺钉放气、直至开始溢油并无残留气为止。

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These valves use a screw type valve instead of a simple flap, and they have a pressure regulating mechanism that will vent water to the ground if the intake pressure exceeds a set level.

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