Can PVC pipe be used for hot water supply?

The short answer: No. Explanation: PVC is a thermoplastic, and therefore, at some point it will begin to degrade and break down as it’s heated up. It just so happens that Schedule 40 PVC’s maximum operating temperature is 140 degrees Fahrenheit, around the same temperature that hot water gets to in most homes.

Can PVC be used in attic?

PVC is allowed for cold water distribution outside of the building. If it’s insulated, I’d bet that it’s being used for hot water distribution. CPVC (as Michael mentioned) can be used for hot and cold. I see PVC used for service entry all the time.

Are PVC water pipes safe?

PVC pipe is one of the safest and most tested materials used in North America. For over 60 years, every aspect of its production, use and disposal has been evaluated and approved by government and independent certification and testing agencies.

What temperature can PVC pipe withstand?

The maximum recommended operating temperature for PVC pressure pipe is 140°F. PVC pipe and conduit becomes stiffer with decreasing temperature and more flexible with increasing temperature. As with dimensions and pressure capacity, published pipe stiffness figures are applicable only for 73°F operating temperatures.

What is the PVC pipe in my attic for?

It could be a plumbing vent, and air conditioner condensate drain or a conduit to run wiring for a security camera under the soffit. Possibly a ceiling fan vent pipe from a bathroom.

What water pipes are in the attic?

There are two types of pipes, other that water supply, that are typically found in an attic: 1) vent pipes for the plumbing drain system, like in the photo above, that extend through the roof and are usually larger diameter and, 2) piping for natural or propane gas that runs through the attic and then down to a furnace …

Is Schedule 40 PVC safe for potable water?

Most schedule 40 PVC found in homes and offices is white pipe with a National Sanitation Foundation (NSF) rating for potable water. Both materials are considered safe for potable water. …

Can you use Schedule 40 PVC for water?

It will degrade when exposed to UV light (such as sunlight), and also high temperature. Its pressure rating is to be derated at high temperatures. Because of this, PVC is not approved for use in houses for potable water.

What is the lowest temperature for PVC pipe?

Like most materials, PVC and CPVC become more brittle at low temperatures, particularly at temperatures below freezing (32°F).

Which is better for hot water PVC or CPVC?

PVC pipe can handle max operating temperatures of up to about 140 degrees Fahrenheit. CPVC on the other hand, is more resistant to high temperatures due to its chemical makeup and can handle operating temperatures of up to 200 degrees Fahrenheit.