By purpose

开断阀：切断或接通管路介质。如截阀、闸阀、球阀、旋塞阀等;

Disconnect valve: cut off or connect the pipeline medium. Such as stop valve, gate valve, ball valve, plug valve, etc;

调节阀：调节介质的压力或流量。如减压阀、调节阀;

Regulating valve: regulating the pressure or flow of medium. Such as pressure reducing valve and regulating valve;

止回阀：防止介质倒流，如止回阀。

Check valve: prevent medium backflow, such as check valve.

分配阀：改变介质的流向，起分配作用。如三通旋塞、三通截止阀等。

Distribution valve: change the flow direction of medium and play the role of distribution. Such as three-way cock, three-way stop valve, etc.

阀：压力超限定数值时，排放多余的介质，保证设备。如阀、事故阀;

Safety valve: when the pressure exceeds the limited value, discharge excess medium to ensure the safety of the equipment. Such as safety valve and emergency valve;

阻气排水阀：留存气体、排除凝结水，如疏水阀。

Gas blocking drain valve: retain gas and drain condensate, such as drain valve.

开断阀：切断或接通管路介质。如截阀、闸阀、球阀、旋塞阀等;

Disconnect valve: cut off or connect the pipeline medium. Such as stop valve, gate valve, ball valve, plug valve, etc;

调节阀：调节介质的压力或流量。如减压阀、调节阀;

Regulating valve: regulating the pressure or flow of medium. Such as pressure reducing valve and regulating valve;

止回阀：防止介质倒流。如止回阀。

Check valve: prevent medium backflow. Such as check valve.

分配阀：改变介质的流向，起分配作用。如三通旋塞、三通截止阀等。

Distribution valve: change the flow direction of medium and play the role of distribution. Such as three-way cock, three-way stop valve, etc.

阀：压力超限定数值时，排放多余的介质，保证设备。如阀、事故阀;

Safety valve: when the pressure exceeds the limited value, discharge excess medium to ensure the safety of the equipment. Such as safety valve and emergency valve;

阻气排水阀：留存气体、排除凝结水，如疏水阀。

Gas blocking drain valve: retain gas and drain condensate, such as drain valve.

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