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Plastic Vent Connector 80 percent Efficient Furnace


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I've seen hundreds if not a thousand without any failures.  There are heat resistant plastics/polymers that can easily handle the heat from a furnace and more.  

I have a car with a turbo that has plastic parts.  How many vehicles have water pumps with plastic impellers and housings?  there's even plastic valve covers now.   Gonna see all plastic combustion engines in some cars soon so makers can meet the 2020 CAFE standard.

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It is probably a heat-resistant PVC. " PVC starts to decompose when the temperature reaches 140 °C (284 °F), with melting temperature starting around 160 °C (320 °F). The linear expansion coefficient of rigid PVC is small and has good flame retardancy, "

It can be modified with additives to withstand even higher temps.

We saw ABS used for furnace exhaust on high-E for a little while, but the standard now is ABS may be used for air intake but not the exhaust. That's got to be PVC.

 

Edited by John Kogel
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