On valves with fixed socket connections in the body, be sure the valve is in the open position to aid in evaporation of solvent vapors which can attack internal components.

• 对于阀体上固定承插连接端口的阀门，要确保阀门处于开启状态，这有助于溶剂蒸汽的蒸发排放，避免溶剂蒸汽损坏内部部件。