阀门注脂时，注意阀门在开关位的问题。球阀维护保养时一般都处于开位状态，特殊情况下选择关闭保养。其他阀门也不能一概以开位论处。闸阀在养护时则必须处于关闭状态，确保润滑脂沿密封圈充满密封槽沟，如果开位，密封脂则直接掉入流道聚氨酯软管 PVC软管 隔离墩模具 u型槽模具 护坡模具 pvc输送带 尼龙输送带 天津除甲醛 北京除甲醛 或阀腔，造成浪费。
Pay attention to the problem that the valve is in the on-off position when injecting grease into the valve. Ball valve maintenance is generally in the open position, in special cases, choose to close maintenance. Other valves should not be treated as open position. When maintaining the gate valve, it must be closed to ensure that the grease fills the sealing groove along the sealing ring. If it is opened, the sealing grease will directly fall into the flow channel or valve cavity, causing waste.