API STD 685-2022 石油、石化和天然气工业工艺用无逢离心泵.pdf

Sealless Centrifugal Pumps for Petroleum Petrochemical and Gas Industry Process Service API STANDARD 685 THIRD EDITION JULY 2022 AP American Petroleum Institute Special Notes API publications necessarily address problems of a general nature.With respect to particular circumstances local state and federal laws and regulations should be reviewed.The use of API publications is voluntary.In some cases third parties or authorities having jurisdiction may choose to incorporate API standards by reference and may mandate pliance. Neither API nor any of API's employees subcontractors consultants mittees or other assignees make any warranty or representation either express or implied with respect to the accuracy pleteness or usefulness of the information contained herein or assume any liability or responsibility for any use or the results of such use of any information or process disclosed in this publication.Neither API nor any of API's employees subcontractors consultants or other assignees represent that use of this publication would not infringe upon privately owned rights. Classified areas may vary depending on the location conditions equipment and substances involved in any given situation.Users of this standard should consult with the appropriate authorities having jurisdiction. Users of this standard should not rely exclusively on the information contained in this document.Sound business scientific engineering and safety judgment should be used in employing the informa...