该尺度适用于闸阀、截止阀、节流阀和隔膜阀等用阀门驱动装置于阀门的连接尺寸。
The standard applies to gate valves, globe valves, throttle valves and diaphragm valves such as valve connections on the drive size.
它规定了部分回转阀门驱动装置与阀门的连接尺寸和驱动件的尺寸，以及转矩的基准值。
It provides part-turn valve actuator and valve size and drive to connect pieces of the size and torque reference value.
电动执行机构是驱动和控制阀门主要装置，在实现管网自动化控制中发挥重要作用。
Electric actuator is an important equipment of driving and controlling valve, which plays important part in the field of realizing piping net automatization.
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