该阀不依赖外部能源工作，具有自动节流减压、泄漏超流自动截断、禁开、温升膨胀自动卸压和压力自动开启等多项功能。

The pressure regulation valve, working without exterior energy, has the functions of pressure regulating, overflow closing, liquid temperature expansion relieving, and set pressure opening.

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为了能承受一定的外部压力并很好地实现密封，设计并采用粘性介质压力成形工艺制造了不锈钢球壳阀芯。

In order to endure certain external pressure and seal well, the stainless steel spherical shell is designed and manufactured.

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