Overview: This document provides technical specifications for tube-to-tube twin ferrule fittings, detailing both metric and fractional tube dimensions and their corresponding union fittings. It includes tables with precise measurements for various tube sizes and their respective fittings.

Specifications: The document lists dimensions for twin ferrule fittings, including both inch and metric measurements. Key parameters include the outer diameter (D), inner diameter (d), and other critical dimensions such as B, H, a, b, A, and L. Each fitting is identified by a unique code (e.g., Uz116, Um2).

Procedures: The tables provide a clear reference for selecting the appropriate fitting based on tube size. This ensures compatibility and proper sealing in piping systems.

Standards and Recommendations: The document implies adherence to industry standards for tube fittings, ensuring reliability and safety in applications. It is recommended to use the specified fittings for the corresponding tube sizes to maintain system integrity.

Key Data from Tables: The tables are divided into sections for inch-based and metric-based tubes, as well as adapters for converting between the two. Each entry provides detailed measurements necessary for selecting the correct fitting, ensuring a secure and leak-proof connection.

Critical Information: The document emphasizes the importance of matching the correct fitting size to the tube size to prevent leaks and ensure system efficiency. It also highlights the availability of adapter unions for connecting different tube standards.