Schedule 80 PVC Fittings

Understanding Schedule 80 PVC Fittings: A Complete Guide

Schedule 80 PVC fittings are robust and reliable components used in high-pressure piping systems. Crafted from polyvinyl chloride (PVC), these fittings are a go-to solution across a variety of industries—including chemical processing, water treatment, and industrial plumbing—thanks to their strength, chemical resistance, and overall versatility. Compared to Schedule 40 fittings, Schedule 80 variants are engineered to withstand more demanding environments, making them an essential part of any system where durability and performance are non-negotiable.

Key Features of Schedule 80 PVC Fittings

Thicker Walls: One of the most distinctive features of Schedule 80 PVC fittings is their thicker walls, which contribute significantly to their high-pressure capacity and structural strength. This added thickness translates into enhanced durability, allowing the fittings to perform well in both harsh chemical environments and under mechanical stress.
Temperature Resistance: These fittings can handle fluid temperatures ranging from 32°F to 140°F (0°C to 60°C). This range makes them suitable for most non-extreme applications involving both hot and cold fluids.
Chemical Resistance:Schedule 80 fittings can safely handle a wide variety of substances, including bleach, alcohols, hydrochloric acid, and sodium hydroxide. This property makes them ideal for chemical processing plants and other settings where corrosive solutions are present.
Pressure Rating: The pressure rating for Schedule 80 PVC fittings generally exceeds that of Schedule 40, although the exact capacity varies depending on the fitting's size. Larger fittings typically have lower pressure ratings, but still outperform their Schedule 40 equivalents.
ASTM Standards: These fittings are manufactured according to stringent ASTM standards, such as ASTM D1784 and ASTM D2467, ensuring consistency, safety, and quality across all components.

Common Applications

Schedule 80 PVC fittings are used in a wide range of applications due to their strength and chemical resistance. These include:

Chemical Processing: Excellent for handling corrosive substances in controlled environments.
Wastewater Management: Ideal for high-pressure waste transport and treatment systems.
Potable Water Distribution: NSF certification ensures safe use in drinking water systems.
Industrial Supply Lines: Frequently used in manufacturing facilities and agricultural systems.
Public Water Features: Commonly found in pools, spas, fountains, and water parks.

Explore Schedule 80 PVC Fittings at Our Canadian Warehouse

Schedule 80 PVC Union Coupling

The Schedule 80 PVC Union Coupling offers a durable, corrosion-resistant solution for a wide range of plumbing and piping applications. Built with thick, high-strength PVC, it withstands high pressure and wear, making it ideal for residential, commercial, and industrial use—including chemical processing and irrigation systems. Featuring socket ends for secure, easy installation, it meets ASTM D1784 standards and carries NSF-61 and NSF-14 certifications.

Schedule 80 PVC Threaded Union Couplings

Premium Schedule 80 PVC Threaded Union Couplings feature dual-threading for secure, leak-proof connections and are certified to ASTM D1784 standards with NSF-61 and NSF-14 approvals. They provide long-lasting performance and low maintenance, making them a reliable choice for demanding piping projects.

Schedule 80 PVC Coupling

The Schedule 80 PVC Coupling with Socket Ends features dual socket ends for secure connections. It’s constructed with thick, corrosion-resistant PVC to withstand high pressure and wear. Ideal for residential, industrial, and chemical use—including water treatment and sewage systems—it meets ASTM D1784 standards and holds NSF-61 and NSF-14 certifications.

Frequently Asked Questions

What makes Schedule 80 PVC fittings different from Schedule 40, and when should I use them?

Schedule 80 PVC fittings have thicker walls than Schedule 40, making them stronger and more resistant to pressure and impacts. They are ideal for high-pressure applications, industrial plumbing, and environments where durability and longevity are critical.

Can Schedule 80 PVC fittings be used for drinking water systems?

Yes. Schedule 80 PVC fittings are safe for potable water when they are NSF-certified. Always verify certifications to ensure compliance with drinking water regulations.

Are Schedule 80 PVC fittings UV-resistant for outdoor use?

Schedule 80 PVC fittings are not inherently UV-resistant. For outdoor installations, they should be painted with a water-based latex paint or protected with a UV-resistant covering to prevent degradation.

How much pressure can Schedule 80 PVC fittings handle?

Schedule 80 PVC fittings can handle pressures up to approximately 850 PSI at 73°F, depending on size and fitting type. Pressure ratings decrease as temperature increases, so pressure derating charts should always be consulted.

Is it acceptable to mix Schedule 40 and Schedule 80 PVC fittings in the same system?

Mixing Schedule 40 and Schedule 80 fittings is possible if nominal sizes match, but the system’s pressure rating will be limited to the lowest-rated component. This is not recommended for high-pressure applications.