阀门PR2试验失败的4大原因-「亿威仕」

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              阀门PR2试验失败的4大原因

              2018-10-19 0

              阀门PR2性能鉴定试验失败的原因主要有以下4个:

              1、阀杆密封件低温泄漏,是因为选用的密封件达不到最低温度要求;

              2、阀座密封圈的损坏,说明阀座密封圈抵抗不了温度变化和密封压力的双重作用;

              3、闸板、阀座的轻微划伤,说明闸板、阀座的表面处理硬座选择不合理,船用锻钢阀门在常温、高温和低温多次循环后,造成表面轻微划伤;

              4、扭矩太大,说明阀杆和阀杆螺母的摩擦系数过大,填料与阀杆之间摩擦系数过大,减磨措施不良。