Schedule 40 and Schedule 80 PVC

Wall Thickness - Schedule 40 vs Schedule 80

Polyvinyl Chloride (PVC or Vinyl) is a high strength thermoplastic material widely used in many applications such as: drainage, water and wastewater treatment, irrigation, agricultural, chemical handling, vent tubing, ductwork, and other applications involving corrosive fluid transfer. It is imperative that the correct wall thickness of a pipe  or pipe schedule  is used for your project and application.

Schedule 80 pipe is designed with a thicker and stronger wall than schedule 40  which means that schedule 80 can handle higher pressures than schedule 40 pipes of comparable outside diameterSchedule 40 PVC is usually white in color and schedule 80 is usually dark gray. 

PVC Schedule 80 has a thicker wall than schedule 40 of similar outside diameter. As the schedule size gets higher, the pipe wall gets thicker, making the inside diameter smaller. This means that schedule 80 pipe will have a slightly more restricted flow of equivalent outside diameter to that of schedule 40 pipe.

PVC Schedule 40

Schedule 40 pipe has thinner walls, so it is best for applications involving relatively low water pressure. It is best suited for drainage, irrigation, and other cold-water systems. Schedule 40 PVC has a max operating temperature of 140 degrees Fahrenheit (60 degrees Celsius). PVC Schedule 40 is a white pipe that is commonly found in local hardware stores.

PVC Schedule 80

PVC Schedule 80 has a thicker wall than schedule 40 of similar outside diameter. Schedule 80 is commonly used for high-pressure applications and is able to withstand higher PSI (pounds per square inch) – making it ideal for industrial and chemical applications. Since schedule 80 PVC has a thicker wall, it is heavier than comparable schedule 40 pipe and fittings. Schedule 80 pipe is usually colored gray to differentiate it from the standard white-colored schedule 40 PVC pipe.

Contact Us

If you’ve got any questions regarding whether to choose Schedule 40 or Schedule 80, call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form below for any questions regarding which type of pipe to choose.

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