Purge Paper heat capacity: How much heat will Purge Paper take?

Short Answer

Purge paper can handle high temperatures, but it must be kept away from the weld area—typically below 300°F—to prevent burning or charring.

Details

While purge paper is designed for high-temperature environments, it is not meant to be exposed directly to welding heat.

To prevent damage:

• Position purge paper away from the heat-affected zone (HAZ)
• Keep it outside high heat areas during welding
• Maintain proper purge chamber distance

If purge paper is exposed to excessive heat, it can:

• Char or burn
• Lose its structural integrity
• Fail to dissolve properly during flushing

This can lead to contamination or blockages when flushing the system with water or steam.

Shop Tip

If your purge paper turns brown or black, it is too close to the heat. Move it back and protect your purge setup.

Bottom Line

Purge paper can handle high ambient heat, but it must stay away from direct welding temperatures. Keep it positioned correctly to prevent burning and ensure it dissolves properly.