John Guest PI2312S - 3/8" O/D Tube Equal Y Connector

The John Guest PI2312S is a 3/8" O/D Tube Equal Y Connector, which means it is a type of fitting used in plumbing and fluid transfer systems.

Specifically, the "3/8" O/D Tube" part of the name refers to the outer diameter of the tubing that this connector is designed to work with. In this case, the connector is compatible with tubing that has an outer diameter of 3/8 inches.

The "Equal Y Connector" part of the name refers to the shape of the fitting. It is designed to split a single tubing connection into two equal branches, forming a "Y" shape. This can be useful in applications where fluid needs to be distributed to multiple locations or devices.

Overall, the John Guest PI2312S is a specialized plumbing fitting that can be used to create a Y-shaped split in a 3/8" tubing line.