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Sch 80 PVC Fittings

Thanks to their thick, durable design, schedule 80 PVC fittings are ideal for connecting pipes used in high-pressure applications, like chemical processing and drainage, chilled water systems, residential and commercial plumbing, water and wastewater treatment, high purity applications, and more. Although schedule 80 PVC fittings are more expensive than schedule 40 PVC fittings, the additional cost is a worthwhile investment considering the added toughness is required in these applications.

Like other types of PVC, schedule 80 PVC fittings are corrosion resistant, so they’re capable of withstanding most acids, oxidants, bases, salts, and other corrosive media. Additionally, they are resistant to soil, moisture, and other metals, making these plastic fittings a perfect choice for underground and underwater pipe systems. Schedule 80 PVC fittings can tolerate temperatures up to 140 ⁰ F.

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Other key features of schedule 80 PVC fittings include: 

  • Withstands high pressures
  • Available in tees, elbows, couplings, adapters, and other common fitting types
  • All sizes and end types available

End types for schedule 80 PVC fittings include slip, threaded, or spigot. Ends labeled as “slip” require the use of adhesive and are often abbreviated with the letter S. They are also referred to as socket ends. They are called “slip” ends because they slip over the end of a pipe. Ends labeled as “threaded” come as male threaded (MPT/MIPT) or female threaded (FPT/FIPT). If the threading is on the outer portion of the fitting, it is male threaded and will screw into a pipe or another fitting. If the threading is on the inner portion of the fitting, it is female, and the pipe or other fitting screws into it. Spigot ends are smooth and go inside of the pipe or other fitting. Like slip ends, spigot ends require the use of an adhesive.

Thanks to thicker walls, schedule 80 PVC fittings are capable of handling higher pressures and are more resistant to bending and breaking than schedule 40 PVC fittings. Schedule 80 PVC fittings can handle up to 400 PSI, compared to schedule 40 PVC’s 280 PSI. The increased wall thickness is added internally, resulting in a decrease in the inner diameter of the fittings and pipe. This means the draw back of schedule 80 PVC fittings is a slightly restricted flow when compared to schedule 40 PVC fittings.

Schedule 40 PVC and schedule 80 PVC pipe have the same outer diameter, meaning you are able to pair schedule 80 PVC fittings with schedule 40 PVC pipe and vice versa. That being said, the entire pipeline system is only as strong as the weakest part. As previously stated, schedule 40 PVC has a lower maximum PSI rating than schedule 80 PVC, so using even one schedule 40 PVC fitting lowers the entire PSI of the schedule 80 PVC pipeline from 400 PSI to 280 PSI.

We have an extensive selection of schedule 80 PVC fittings, including bulkhead tank adapters, barbed inert fittings, saddles, flanges, and more. Our wide array of fittings includes sizes as small as ¼” and as large as 20”. Browse our full collection of schedule 80 PVC fittings now.

Contact us today for more information or with any questions. We are available by phone or email, and we are always happy to offer you any assistance you may need!