Difference between schedule 40 and 80

What is Schedule 80 pipe used for?

What is schedule 80 PVC used for? Because schedule 80 PVC is a thicker pipe, it is usually is used for applications that are commercial or industrial in nature. These more demanding applications generally require piping that will stand up to high pressures and harsh environments.

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.

What is Schedule 40 PVC pipe used for?

PVC Schedule 40 pipe is used for drainage and lower pressure water flow applications. Schedule 40 PVC pipe can handle up to 140 degrees F in temperature. Pipe lengths come in standard 10′ or 20′ sections.

Can I glue Schedule 40 PVC to schedule 80?

Yes they can be glued together. The outside diameters are the same for each pipe but the inside diameter is smaller on sch 80 pipe. Sch 80 pipe is capable of handling more pressure, hence the thicker wall. I use sch 80 for its grey apperance and thats it, sch 40 is fine for all of our applications.

What is the difference between white and GREY PVC?

Grey PVC is used as electrical conduit and is better suited for sunlight resistance. The fittings for this type of pipe are made to pull wires into and not intended for containing pressured fluids. White is for plumbing applications. Both use the same solvents and glues.

Is Schedule 40 or 80 thicker?

The major difference between schedule 40 and schedule 80 pipe is the wall thickness, inside diameter, and their weight. Schedule 80 will have a greater wall thickness, a smaller inside diameter and a higher weight than Schedule 40 pipe at a given nominal pipe size.

What does Schedule 40 mean?

The most used pipe schedule is SCH 40. For NPS 12 or smaller pipes or pipes with outer diameter of around 12 inches, SCH 40 is the same wall thickness of the previously used value. The SCH 80 wall thickness, on the other hand, is the same as the previously used XS wall thickness for pipe sizes up to NPS 10.

What PSI can schedule 40 PVC handle?

PVC Schedule 40 Pressure/DWV Pipe (drain, waste and vent)

Trade SizePart NumberPressure Rating (psi)
1/2 5405010P 600
3/4 5407510P 480
1 5410010P 450
1-1/4 5412510P 370

Is Schedule 10 or 40 thicker?

Pipes Schedule 40 have a greater wall thickness than Pipes Schedule 10, this feature makes it resistant to high pressure. Its has a thickness ranging from 2.7 to 3,91 inches with pipe diameters ranging from 21.3 millimeters ( ½”) to 60.33 millimeters (2”).

Why is it called Schedule 40 pipe?

They devised “Schedule” numbers as designating “the wall thickness in that pipe diameter that would hold a given pressure for a given material tensile strength”. So the pipe thickness which would hold 600psi at 15 ksi material strength was designated as schedule 600/15= 40. THATS WHERE IT CAME FROM!!!

What does the S in Schedule 40s pipe mean?

S = allowable stress (psi) The higher the schedule number is, the thicker the pipe is. Since the outside diameter of each pipe size is standardized, a particular nominal pipe size will have different inside pipe diameter depending on the schedule specified.

What is the yield strength of schedule 40 pipe?

Strength. According to the University of Massachusetts, the hardness of schedule 40 steel pipe was measured to be 16.1 on the Rockwell scale. It was also found to have a yield strength of 423 MPa, an ultimate strength of 470 MPa and an elastic modulus of 225 GPa.

How much weight can schedule 40 pipe support?

According to, schedule 40 1.5 inch diameter PVC pipe can take 954 pounds of tensile strength, and schedule 80 1.5 inch diameter PVC pipe can take 1225 pounds of tensile strength. Tensile strength is simply the most weight that can be put on something before it breaks.