Packing blowout (optional) ensures fast removal of old packing rings when time-consuming conventional packing removal methods are unacceptable (nuclear service, for example).

• 填料吹出（备选）保证在时间很宝贵、传统的填料拆卸方法不能采用时（如核应用），旧填料环的拆卸速度更加快捷。