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API STD 681

1st Edition, June 2002

Complete Document

Liquid Ring Vacuum Pumps and Compressors for Petroleum, Chemical, and Gas Industry Services

Includes all amendments and changes through Reaffirmation Notice , November 2010


Detail Summary

Active, Most Current

EN
Additional Comments:
C68101
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Referenced Items:

ABMA STD 19.1
ABMA STD 20
ABMA STD 7
ABMA STD 9

Product Details:

  • Revision: 1st Edition, June 2002
  • Published Date: November 2010
  • Status: Active, Most Current
  • Document Language: English
  • Published By: American Petroleum Institute (API)
  • Page Count: 80
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This standard covers the minimum requirements for liquid ring vacuum pump and compressor systems for service in the petroleum, chemical, and gas industries. This includes both vacuum pump and compressor design and system design.

The design of the system is critical to the successful operation of the liquid ring vacuum pump or compressor. Close attention must be paid not only to the design of the ring liquid system but also to how it is integrated into the user’s process.

Although this standard covers minimum requirements appropriate for petroleum refinery service, purchasers may wish to consider pumps, compressors, and systems that do not meet all the requirements of this standard, based on specific nonflammable, nontoxic service conditions.

Note: A bullet (•) at the beginning of a paragraph indicates that a decision by the perchaser is required. These decisions should be indicated on the data sheet (see Appendix A); otherwise, they should be stated in the quotation request or in the order.