Relay valves convert a sustained air flow from a three-way pilot valve into a momentary pulse or bleed, which shifts a control valve and then closes.

延迟阀可调节从三通控制阀到瞬间脉冲或放气阀的空气流量，放气阀或瞬间脉冲改变控制阀，然后关闭。

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Moreover, WAXP carries all control information in packet headers, thus the advantage of requiring no per-flow state on relay nodes significantly improves the scalability of the protocol.

此外，WAXP将所需控制信息包含在专用的包头中，无需转发节点维护每流信息，增强了协议的扩展性。

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