Connections between metallic and plastic piping outdoors must use fittings that conform to which standards?

Connections between metallic and plastic piping outdoors must use fittings that conform to ASTM D 2513 and ASTM F 1973 standards. ASTM D 2513 specifically provides the requirements for the materials used in the construction of polyethylene (PE) gas piping systems, including piping and fittings used in underground applications. This standard ensures that the materials used can withstand the environmental conditions and pressure associated with gas distribution.

ASTM F 1973 is concerned with the fittings that connect these systems, which must be compatible with the respective piping to ensure a safe and leak-free connection. This standard addresses the design and performance requirements that the fittings must meet to maintain integrity over time, particularly in outdoor environments where they may be exposed to various temperature fluctuations and other stress factors.

By adhering to these specific standards, the connections between metallic and plastic piping are ensured to be reliable and suited for their intended use, minimizing the risk of leaks and ensuring safety in gas distribution systems.