目的本标准实施规程旨在为阀门用户提供用于评估阀门手动操作的信息。必须理解的是，这些信息是一般性的，必须由阀门的具体操作数据和需要经历的工作条件来补充。本标准规程不包括特定阀门和致动器类型的最大和最小扭矩额定值，但在将手动输入装置应用于任何特定阀门时，必须予以考虑。关于阀门和致动器类型和额定值，应咨询阀门和致动器制造商的数据。 范围本标准实施规程提供了受阀门操作员输入影响的手动阀门操作指南。

PURPOSEThe purpose of this Standard Practice is to provide valve users with information for use in evaluating the manual operation of valves.It must be understood that this information is general in nature and must be supplemented by specific operational data for the valve and service conditions to be experienced. The maximum and minimum torque ratings of specific valve and actuator types are not covered by this Standard Practice, but must be considered when applying manual input devices to any specific valve. Data from teh valve and actuator manufacturers should be consulted regarding valve and actuator types and ratings.SCOPEThis Standard Practice provides guidelines for the operation of manually actuated valves as affected by the valve operator's input.