Pvc Schedule 40 Vs 80

Maybe you ve seen that schedule 80 pipe is slightly more costly than schedule 40.

Pvc schedule 40 vs 80. If seeking to understand pipe scheduling especially for pvc and cpvc our article above hopefully shed some light on the definition key differences and usage considerations for both schedule 40 and schedule 80. Schedule 40 pvc conduit is cheaper and has a larger inside diameter so it s easier to pull wires through it. Although schedule 80 pvc is usually gray sometimes it can be white. Schedule 80 pipe is designed with a.

If not maybe read it again. Schedule 40 pvc is usually white in color and schedule 80 is usually a dark gray they can also be found in other colors. Their most important difference though is in their design. The thickness of the pvc wall becomes more important when dealing with larger pipes.

Despite its deceiving title schedule doesn t have anything to do with time. By contrast schedule 80 pvc is usually gray in color and has thicker walls. A 1 pipe of schedule 40 and schedule 80 has same outside diameter. Therefore it can handle higher water pressures.

Schedule 40 vs schedule 80 pvc wall thickness. Smaller pipe diameters will result in a stronger pipe and thus will withstand higher water pressure. Schedule 80 pvc is well suited for industrial and chemical applications. Any time there is a necessity for a stronger pipe than the standard strength schedule 40 inspectors may require schedule 80 pipe to be used.

A pvc pipe s schedule has to do with the thickness of its walls. Always install schedule 80 conduit in high traffic areas or any other areas. For pvc fitting schedule 40 and pvc fittings schedule 80 the optimal temperature at which pvc can operate at the highest psi would be 73 degrees fahrenheit. The chart below will illustrate the pressure derating of pvc as temperatures increase.

Schedule 40 pvc pipe works best for low water pressure applications. Schedule 40 and schedule 80 pipes have the main difference of sizing and diameter. The thicker the wall of the conduit the stronger it is to both outside forces and internal pressure. A schedule 80 pipe has a thicker wall even though its exterior diameter is similar to a schedule 40 pipe.

As the temperature of the pvc increases the pressure that the pvc can withstand will decrease. Schedule 40 has thinner walls though then the schedule 80 pvc pipe so it is used in systems where the low pressure of water is involved. The plastic on schedule 80 is thicker but the conduit has the same outside diameter as 40 so the inside diameter is smaller. Having the same outside diameter is possible because the extra thickness of a schedule 80 pvc is inside the pipe.

2 schedule 80 pipes will be rated up to 400 psi compared to a rating of 280 psi for 2 schedule 40 pipe. If you ve been shopping around for pvc you may have heard the term schedule. Schedule 40 vs schedule 80 takeaways. There are two common types of pvc pipe schedule 40 pvc and schedule 80 pvc.