CGA V-21

CGA V-21 provides fillers and users of compressed gases with torque guidelines for sealing various CGA cylinder valve outlet connections except for the 630/710 connections covered in CGA V-17, Guideline for Handling and Use of CGA 630/710 Series Ultra High Integrity Service Connections, medical yoke connections, medical DISS connections, scuba connections, and residual pressure valve (RPV) connections. By following these guidelines, users can expect to reduce leaks and damage to the connections.