Purge Connection

A purge connection is a critical feature installed at the sealed end of the internal sleeve in a metal expansion joint, particularly in services involving abrasive, corrosive, or particulate-laden media.Through this connection, a purge medium either gas or liquid is injected between the bellows and the internal sleeve.

This Flushing Action

• Keeps the convolutions free of debris, solids, or corrosive residue,
• Reduces erosion and corrosion, and Helps prevent packing or clogging that could impair bellows movement.

Purging

• Continuous (for critical or high-risk processes),
• Intermittent (as needed during operation),Or timed with startup/shutdown cycles.