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About This Item

 

Full Description

This Standard Practice establishes minimum requirements for the modification of new American Water Works Association (AWWA) valves manufactured in accordance with one or more of the stated AWWA standards, and that require modification to meet specific end user requirements for use in water works applications. MSS SP-153 was developed to ensure that the quality of workmanship and materials meet all applicable standards and codes. The procedures contained within this document are general in nature and the facility performing the modification(s) may need to augment them as necessary to achieve compliance with all applicable codes and standards. The contents of this Standard Practice include terms and definitions, overall modification requirements, marking, traceability, assembly, disassembly, and storage requirements; in addition to specific modification, evaluation, and testing procedures.

Purpose:
The purpose of this Standard Practice is to ensure that the quality of workmanship and materials meet all applicable standards and codes.

Scope:
This Standard Practice establishes minimum requirements for the modification of new American Water Works Association (AWWA) valves manufactured in accordance with one or more of the following AWWA standards, and that require modification to meet specific end user requirements for use in water works applications. Specific AWWA standards, pertaining to this Standard Practice, include:
  • C507, Ball Valve
  • C504 and C516, Butterfly Valve
  • C500, C509, and C515, Gate Valve
  • C520, Knife Gate Valve
  • C517, Plug Valve

The procedures contained within this Standard Practice are general in nature and the facility performing the modification(s) may need to augment them as necessary to achieve compliance with all applicable codes and standards.