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Can CPVC Sprinkler Pipe be Exposed to Flames?

Can CPVC Sprinkler Pipe be Exposed to Flames?

Blazemaster CPVC  |  fire safety  | on 

BlazeMaster CPVC has earned its reputation around the world as an effective, safe and efficient fire sprinkler material. Not only because of its fast, safe and convenient installation, but the way in which it performs when it is needed.

When fire breaks out, whether it is in a single or multi family home, a commercial or government building, there are a number of hazards and dangers that are to be avoided beyond the obvious outbreak of fire. BlazeMaster CPVC does not contribute to this already hazardous environment; instead, it concentrates on isolating and suppressing the outbreak of fire at the required targeted location.

In the meantime, the pipe material's exposure to flames does not present any further concern, nor will it threaten the performance of the fire sprinkler when it is needed most.

Let’s discuss how BlazeMaster CPVC is able to maintain maximum efficiency in the outbreak of fire, even when exposed to flames

Why Does CPVC pipe respond to fire differently?

The reason CPVC does not respond in the same way as you would typically expect from other plastics such as PPR and PEX, is that CPVC is different, on a molecular level.

CPVC's 65% chlorine content gives it a natural flame retardant quality that other plastics simply do not have. The exceptionally high level of chlorine content in BlazeMaster CPVC gives this particular brand of CPVC industry-leading heat, flame and corrosion resistance.

It also means water can be distributed through BlazeMaster CPVC pipes at higher pressures without losing its hydraulic performance.

What happens to CPVC pipes in a fire?

When exposed to flames, BlazeMaster CPVC does not respond the way typical plastics would. As soon as the flame is removed from the pipe material, the pipe material self-extinguishes. It does not sustain the development and spreading flames on its surface.

In addition to this, CPVC's molecular structure responds to flames by forming a thick protective layer, insulating the interior of the pipe from additional fire damage.

Flash Ignition Temperature

BlazeMaster CPVC's flash ignition temperature (the lowest temperature at which CPVC can support combustion) is 900°F (482°C)

Limiting Oxygen Index (LOI)

BlazeMaster CPVC requires 60% oxygen in the atmosphere to sustain a flame; Earth's atmosphere is made up of only 21% oxygen. This is the reason for BlazeMaster CPVC's self-extinguishing properties.

Smoke Generation

BlazeMaster CPVC limits the amount of smoke produced, reducing smoke damage and potential toxic smoke inhalation, especially when compared to other fire protection materials in a fire outbreak situation.

Thermal Protection

Rather than melt and produce harmful burning droplets, CPVC piping chars, insulating the inside of the pipe, allowing cool water to continue to the required location. This preserves the structural integrity of the system, even in the harshest outbreaks.

Hydraulic Strength

A properly installed BlazeMaster CPVC piping system will maintain its smooth surface and Hazen WillIams C factor of 150 (compared to steel's 120,) maintaining unrestricted flow of water, keeping its structural integrity intact.

This eliminates the risk of weak spots in piping joints which, in the case of steel, can lead to leaking or bursting after multiple uses.

Learn more

For more information, visit the contact us page to talk to a member of our team.