To lose control of the valve material, valve shaft from stainless steel ANSI420.
用于输料管的阀门，阀轴由ANSI420不锈钢制造。
Be sure to use proper valve material-types for both temperature and chemical resistance.
确保采用与温度和耐化学性相匹配的材质的阀门。
The physical property and mechanical performance must be considered when selecting the valve material.
在材料选择时必须考虑材料的物理性质和机械性能。
Limited by the ring material, the use of butterfly valve pressure and low temperature range.
受密封圈材料的限制，蝶阀的使用压力和工作温度范围较小。
The current nuclear valve sealing surface surfacing material is generally cobalt alloy.
目前核阀密封面堆焊材料一般均为含钴合金。
Rod valve is usual op. en and material is in flow condition.
棒条闸门一般为常开型，物料处流通状态。
The valve is the opening type. The material is in the state of circulation.
棒条闸门一般为常开型，物料处流通状态。
The valve is the opening type. The material is in the state of circulation.
棒条闸门一般为常开型，物料处流通状态。
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