Interep CustomFlex Dynamic Insulation on a hot metal bellows. Your average metal bellows on an Alstom HRSG sheds around 5500BTUs of heat per hour (in a hot climate!) that number is probably closer to 7500 in the winter. That equates to about $1-2 of lost heat per hour, on just a single expansion joint.

Interep CustomFlex Dynamic Insulation on a hot metal bellows. Your average metal bellows on an Alstom HRSG sheds around 5500BTUs of heat per hour (in a hot climate!) that number is probably closer to 7500 in the winter. That equates to about $1-2 of lost heat per hour, on just a single expansion joint.

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