Key-operated cast iron valve used for underground installations

This document establishes the technical requirements for cast iron valves designed for underground utility installations, specifically focusing on those operated via a key. It defines the necessary dimensional specifications, material properties, and performance criteria to ensure reliability and safety within subsurface infrastructure networks. The standard addresses critical aspects such as valve body construction, sealing mechanisms, and the interaction between the operating key and the valve stem. It aims to facilitate interoperability among different components used in water, gas, and sewage distribution systems by providing a unified framework for manufacturing and testing. The scope includes procedures for verifying the durability and functionality of the valves under typical operational conditions. By adhering to these guidelines, manufacturers and contractors can ensure consistent quality and long-term performance of underground valve assemblies, thereby contributing to the stability of essential utility services.