What are the flame and smoke properties of CPVC?
Compared with many other common building products, CPVC offers low combustibility. In fact, FlowGuard Gold, BlazeMaster and Corzan piping systems cannot support combustion. They have a flash ignition temperature of 900°F, which is the lowest temperature at which sufficient combustion gas is evolved to be ignited by a small external flame. Many other ordinary combustibles, such as wood, ignite at 500°F or less. Nor can our CPVC piping systems sustain burning. That’s because they require more oxygen than is present in the earth’s atmosphere. While the pipe and fittings will char when exposed to an external flame, the charring becomes a thermal barrier, which then restricts the flow of heat into the pipe and further reduces the rate of burning. In addition, CPVC releases few toxins when burned. Although all materials give off some toxins when burned, third-party tests confirm that our CPVC piping systems produce far less toxins than many common materials. In fact, the smoke from CPVC pipe
