Wall Thickness
There are two common types of PVC pipe – schedule 40 PVC and schedule 80 PVC. Schedule 40 PVC is usually white in color and
schedule 80
is usually a dark gray (they can also be found in other colors).
What is the difference between gray PVC and white PVC?
The most noticeable difference between regular PVC and electrical PVC is
the color of the pipes
. PVC pipe that is used for plumbing is usually white while electrical conduit PVC is usually gray. … Therefore, Schedule 80 pipes should not be used as an electrical conduit.
What is gray PVC pipe called?
Polybutylene pipe
is a gray plastic tubing that was commonly used as a water-supply plumbing pipe between 1978 and 1995, at which time it was discontinued due to reports of pipes rupturing. In new construction, it was replaced by copper or more dependable forms of plastic pipe, such as CPVC and PEX.
Can gray PVC be used for water?
Gray conduit is not rated for pressure pipe applications and
may not be suitable for potable water use
. Stabilizers and other ingredients used in conduit PVC may be toxic; conduit PVC is not held to the same drinking water standards as NSF marked pipe and should not be used in potable water systems.
What are GREY pipes?
Polybutylene
is a form of plastic resin that was used extensively in the manufacture of water supply piping from 1978 until 1995. Due to the low cost of the material and ease of installation, polybutylene piping systems were viewed as “the pipe of the future” and were used as a substitute for traditional copper piping.
What do the different colors of PVC pipe mean?
Blue pipes are used for potable or drinking water.
Green pipes are sewer and drain lines
. Lavender or purple pipes carry reclaimed wastewater that undergoes filtration and disinfection treatment before being reused for irrigation.
Why is PVC pipe so expensive now?
As a result of this lack of raw material, PVC pipe mills have been unable to keep up with rising demand, resulting in
finished goods prices continuing to increase
, while production levels falter.
What is Schedule 80 PVC pipe used for?
Schedule 80 PVC pipe is used for
industrial and higher pressure water flow applications
. Schedule 80 PVC pipe can handle 140 degrees F in temperature. The pipe comes in standard 10′ or 20′ sections and is available in plain end or belled end so no coupling is needed for installation.
Does GREY PVC glue need primer?
According to the manufacturer,
one class requires the application of primer
, such as All-Purpose cement, Regular Clear PVC cement and Medium Gray PVC cement. The other class does not require the application of primer, such as Hot Medium Blue Lava PVC cement and Rain-R-Shine® Medium Blue PVC cement.
Can I bury Schedule 40 PVC?
Schedule 40 PVC Conduit is used in walls, floors and ceilings in accordance with NEC 352. According to NEC 352 it can also
be buried directly into the earth
, encased in concrete, and used in areas exposed to direct sunlight. … It is not designed for use above ground or in walls, floors or ceilings.
How can you tell if you have polybutylene pipes?
- Look for a flexible, gray pipe with copper-colored fittings. Gray is the most common color, but polybutylene also came in blue or black.
- Polybutylene is usually stamped with the code: “PB2110”
- It is usually 1/2” to 1” in diameter.
- It is not used for waste, drain or vent piping.
Should I replace my PVC pipes?
Here are the expected lifespans for the two most common drain lines:
Plastic PVC Pipes: 25-40 years
.
Cast Iron Pipes: 80-100 years
.
Does the color of PVC pipe matter?
PVC pipes
‘ color sometimes indicates their use
. … It is used in homes for water pipes, sewer system pipes and even furniture. Regardless of the use, there are times when colored PVC pipe is preferred. There are a few color options for PVC pipe available on the market.
What is purple colored PVC pipe used for?
Large property owners like cemeteries and golf clubs are among the few who can use
recycled water
through most Southern California water systems. A special pipe, it carries sewage water that’s been filtered for solids and cleaned of some impurities.
Which is better schedule 40 or 80?
Schedule 40 pipe
has thinner walls, so it is best for applications involving relatively low water pressure. Schedule 80 pipe has thicker walls and is able to withstand higher PSI (pounds per square inch). This makes it ideal for industrial and chemical applications.
