Is CPVC allowed in NFPA 13?

To summarize, in an NFPA 13 occupancy, CPVC can be installed concealed or exposed up to 400 ft2 and concealed in a private garage up to 1,000 ft2.

Is CPVC fire rated?

Fact: CPVC piping has achieved the best possible fire-protection classification of a non-metal material, which is Bs1d0: Fire behavior: B = low flammability with no contribution to flashover.

Can CPVC be used for sprinkler pipe?

In fact, NFPA regulations specify that CPVC pipe and fittings are the only nonmetallic system permitted for use in a standalone fire-sprinkler system or one that’s installed in an exposed environment, thanks to the material’s superior performance capabilities.

Is CPVC allowed?

The new regulations approve CPVC pipe for use in residential water supply piping systems. … CPVC has been a nationally accepted material since 1982, but California has only permitted its use on a limited basis since 2001.

What type of pipe is used for fire sprinkler systems?

The most commonly used steel pipe for sprinkler systems is black steel pipe. Copper tubing is another piping material listed for sprinklers in NFPA 13. Also, plastic pipe (namely, CPVC and PEX tubing) is permitted for certain types of sprinkler systems.

IMPORTANT:  Are old fire hydrants worth anything?

Can you use CPVC in a plenum?

Also, CPVC plumbing pipe is safe for installation in return air plenums; however, the installation must be approved by the local jurisdiction. Even though CPVC is considered a combustible material it will not burn without a significant external flame source.

What glue do you use for CPVC pipe?

Unlike green pipe (PPR) and metal pipes, which require heat and flame to weld joints together, FlowGuard® CPVC pipe and fittings use a process called solvent cement welding.

Where can CPVC pipe be used?

CPVC is a high-temperature plastic pressure piping system introduced for potable plumbing in 1959. It has also been used extensively in fire sprinkler systems since 1985. This material is also used for many industrial and process piping applications.

Is CPVC safe for drinking water?

Chlorinated polyvinyl chloride pipes (CPVC) are made from PVC that has extra chlorine added to the material. … CPVC will not degrade with hot water exposure and is safe for drinking water.

Is PEX better than CPVC?

CPVC Pipes Offer Better Water Pressure Than PEX

With PEX, the pipe fits around the outside of the fitting so the internal diameter of the pipe is reduced at each fitting—even when “full flow” expansion fittings are used. Depending on the fitting used, this can reduce the internal diameter of a ½” pipe by 21% to 35%.

Is CPVC up to code?

CPVC is accepted under the International Plumbing Code (IPC) and Uniform Plumbing Code (UPC), as well as most state and local codes. It is also important to verify military, government, and corporate specifications for approval.

IMPORTANT:  What makes wood burn slowly?

Can you use 1/2 inch sprinkler pipe?

When you install a sprinkler system, you might use PVC or polyethylene piping to deliver water to the sprinkler heads. If you use PVC, the typical diameter of the pipes is between 1/2 inch and 2 inches.

Why is fire sprinkler water black?

By far the most common corrosion reaction found in fire sprinkler systems is oxidation. Oxygen trapped inside the system dissolves into water and reacts with the internal surface of the black or galvanized steel piping.

What is the red liquid in fire sprinklers?

A glass bulb type sprinkler head will spray water into the room if sufficient heat reaches the bulb and causes it to shatter. Sprinkler heads operate individually. Note the red liquid alcohol in the glass bulb.


Temperature Color of liquid alcohol inside bulb
°C °F
57 135 Orange
68 155 Red
79 174 Yellow
Fire safety