This standard specifies the technical requirements for ductile iron gate valves used in waterworks. It covers aspects such as material selection, manufacturing processes, inspection criteria, and performance tests to ensure the reliability and durability of these valves. The document provides detailed guidelines for dimensions, pressure ratings, mechanical properties, and testing procedures necessary for the proper functioning of gate valves in water supply systems.
*** Please note: This description may not be accurate, please refer to the official documentation.