CPVC Installation Guide

BlazeMaster® Fire Sprinkler Systems is the world's most specified nonmetallic fire sprinkler system. If you've used BlazeMaster Pipe & Fittings before, you know how easy it is to work with and install; if this is your first time using it, you'll be pleasantly surprised at how light and flexible it is and how quickly it can be installed.

We've put together this Best Practices Guide to help installers. This doesn't replace the manufacturer's installation instructions, but is a list of do's and don'ts that can be helpful in the field. 

This information is also available in our Downloadable Pocket Guide (PDF)

Cutting and Joining Steps

Cut Pipe

Cut Pipe

1.) Cut pipe squarely, using ratchet cutter, wheel-type plastic tubing cutters, power saw, or fine-tooth saw.

Deburr the Pipe


2.) Deburr inside/bevel outside of pipe.

Test the Fitting


3.) Test fit the pipe

Cement the Outside of the Pipe

Cement the Outside

4.) Apply cement to the outside of the pipe.

Cement the Inside of the Pipe

Cement the Inside

5.) Apply cement (without dipping back into the can) to inside of fitting socket. On sizes 1¼" (32mm) and larger, dip cement and apply to pipe again.

BlazeMaster Pipe and Fitting Joined

Insert Pipe

6.) Insert pipe end into socket while rotating pipe a quarter turn. Hold 30 seconds.

Video: Cutting and Joining Best Practices

This video demonstrates some best practices for the cutting and joining process. Always review the manufacturer's installation instructions before beginning.

Curing Schedules

225 psi (1552 kPa) Test Pressure (maximum)
Ambient Temperature During Cure Period
(Use this table for all cut-ins)

Pipe Size 60°F to 120°F
(16°C to 49°C)
40°F to 59°
(4°C to 15°C)
0°F to 39°F
(-18°C to 4°C)
¾" (20 mm) 1 hour 4 hours 48 hours
1" (25 mm) 1½ hours 4 hours 48 hours
1¼" & 1½" (32 & 40 mm) 3 hours 32 hours 10 days
2" (50 mm) 8 hours 48 hours Note 1
2½" & 3"
(65 & 80 mm)
24 hours 96 hours Note 1

200 psi (1379 kPa) Test Pressure (maximum)
Ambient Temperature During Cure Period

Pipe Size 60°F to 120°F
(16°C to 49°C)
40°F to 59°
(4°C to 15°C)
0°F to 39°F
(-18°C to 4°C)
¾" (20 mm) 45 minutes 1½ hours 24 hours
1" (25 mm) 45 minutes 1½ hours 24 hours
1¼" & 1½" (32 & 40 mm) 1½ hours 16 hours 120 hours
2" (50 mm) 6 hours 36 hours Note 1
2½" & 3"
(65 & 80 mm)
8 hours 72 hours Note 1

100 psi (690 kPa) Test Pressure (maximum)
Ambient Temperature During Cure Period

Pipe Size 60°F to 120°F
(16°C to 49°C)
40°F to 59°
(4°C to 15°C)
0°F to 39°F
(-18°C to 4°C)
¾" (20 mm) 15 minutes 15 minutes 30 minutes
1" (25 mm) 15 minutes 30 minutes 30 minutes
1¼" (32 & 40 mm) 15 minutes 30 minutes 2 hours

Note 1: For these sizes, the solvent cement can be applied at temperatures below 40°F (4.5°C), however, the sprinkler system temperature must be raised to a temperature of 40°F (4.5°C) or above and allowed to cure per the above recommendations prior to pressure testing.

Follow manufacturer’s instructions on pressure testing. Fill lines slowly and bleed the air from the system prior to pressure testing.

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Installation Best Practices

  • Keep pipe and fittings in original packaging until needed.
  • Avoid exposing pipe to direct sunlight for long periods of time. Cover pipe with opaque tarp if stored outside.
  • Do not use pipe whose color has faded due to prolonged sunlight exposure
  • Wear proper protective clothing, including gloves and safety goggles while using solvent.
  • Provide ventilation or NIOSH-approved respirator if necessary.
  • Use proper solvent cement and follow application instructions.
  • Store between 40°-110°F (4-43°C) or as specified on label. Do not store near heat, sparks, open flames or other sources of ignition. Keep containers closed and covered.
  • Do not smoke, eat or drink while using.
  • Keep solvent cement away from skin, eyes and clothing.
  • Do not use solvent cement that has exceeded its shelf life or has become gelled or discolored. Shelf life is two years after the date on the bottom of the can.

Store bulk quantities in location above 40°F (4°C). If solvent cement gels:

  • Bring it into a warm environment (60°-90°F or 16°-32°C) and allow to sit for 24 hours.
  • Do not artificially heat.
  • Shake vigorously before use.
  • Do not use Teflon tape and thread sealant simultaneously.
  • Install sprinkler head after sprinkler head adapter has been solvent welded. Make sure the waterway is not obstructed. Then install the sprinkler head.
  • Allow for movement due to expansion and contraction, particularly if installing in cold weather.
  • Use ratchet cutters only at 50°F (10˚C) or higher.
  • Make sure blades are sharp. 

Compatibility Notice

CPVC pipe can be damaged by contact with chemicals contained in some construction products, such as:

  • Edible oils
  • Petroleum or solvent-based sealants
  • Lubricants or firestop materials
  • Glycol-based antifreeze
  • Insulated wire
  • The FBC™ System Compatible Program has resources including lists of compatible and incompatible productions.

The information contained herein is believed to be reliable, but no representations, guarantees or warranties of any kind are made as to its accuracy, suitability for particular applications or the results to be obtained. The information often is based on laboratory work with small-scale equipment and does not necessarily indicate end product performance or reproducibility. Formulations presented may not have been tested for stability and should be used only as a suggested starting point. Because of the variations in methods, conditions and equipment used commercially in processing these materials, no warranties or guarantees are made as to the suitability of the products for the applications disclosed. Full-scale testing and end product performance are the responsibility of the user. Lubrizol Advanced Materials, Inc. shall not be liable for and the customer assumes all risk and liability for any use or handling of any material beyond Lubrizol Advanced Materials, Inc.’s direct control. The SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Nothing contained herein is to be considered as permission, recommendation, nor as an inducement to practice any patented invention without permission of the patent owner.