检查阀瓣橡胶，如果需要，则进行清洗或更换。通过逆时针方向旋转白色垫圈螺纹就可以拆卸阀瓣。
Inspect the disc rubber and clean or replace if required. The disc can be removed by screwing the white washer counterclockwise.
绝热盒，包括绝热衬垫，橡胶密封，4个螺纹接头。
Heat-proof case with heat-proof insert, rubber seal, 4 clamp screw connections.
过程连接必须和橡胶外壳密封，不是螺纹！
The process connections must seal tightly to the plastic housing but not the thread!
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