How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
What type of white plastic pipe has the marking CP-112-P in red letters?
Thursday, August 9, 2018
It is PVC and made by Charlotte Pipe. The pipe is rated for drinking water, but not for use inside a home or to transport hot water. So it should not be used for the discharge piping from the Temperature-and-Pressure Relief (TPR) valve at a water heater.
As far as we know, any Charlotte Pipe with red lettering is going to be PVC. Also, see our blog post Are plastic pipes (PVC, CPVC, and PEX) safe for drinking water?
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Here’s links to a collection of our other blog posts about PLUMBING PIPES:
• How can I protect my pipes to keep them from bursting during a hard winter freeze in North Florida?
• Can galvanized steel pipe still be used for new water lines in a house?
• How can I tell if I have cast iron pipes in my house?
• Why can't a sanitary tee be used for a horizontal-to-horizontal drain pipe connection?
• What is the difference between green and white sewer drain pipes?
• What is a galvanized nipple?
• What are the pipes sticking out near my water valves?
• How do you accurately find a broken water pipe leak under the floor slab?
• What is the difference between water pipe and sewage (waste) pipe?
• Are plastic pipes (PVC, CPVC, and PEX) safe for drinking water?
• Is a hot water faucet handle required to be on the left?
• What's that powdery crust on the pipe connections at the water heater?
• How can I tell what type of plumbing pipe I have?
• Why is there a flexible accordion pipe under the sink?
• What is the difference between PVC and ABS plumbing pipe?
• What is the difference between water service pipe and water supply pipe?
• Can you connect CPVC pipe directly to a gas water heater?
Visit our PLUMBING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
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