Schedule 80 Van Stone Spigot Flanges

Van Stone Spigot flanges are a specialized type of flange assembly consisting of a stub-end and a loose ring flange. This two-piece design allows for easy bolt hole alignment independent of pipe rotation, making installation and maintenance faster and more convenient.

Constructed from Schedule 80 PVC, these flanges offer superior durability and high-pressure resistance. The rotating ring design prevents torque stress on the flange, while the smooth bore interior promotes efficient flow with minimal turbulence. They are corrosion-resistant, chemical-resistant, and compatible with a wide range of fluids and piping systems.

Ideal for both residential and industrial applications, these fittings ensure a secure, leak-proof connection. Whether you’re working in chemical processing, wastewater treatment, or industrial manufacturing, Schedule 80 Van Stone Spigot flanges offer a high-performance solution.

Common Applications

Schedule 80 Van Stone Spigot flanges are widely used across several industries due to their reliability and versatility:

  • Chemical Processing – Suitable for aggressive fluids and corrosive environments
  • Wastewater Treatment Plants – Easy to maintain in systems that require frequent inspection
  • Industrial Manufacturing – Durable enough for high-pressure and high-temperature applications
  • Large-Scale Plumbing Systems – Ideal for setups that may need periodic disassembly or reconfiguration

These flanges are compatible with PVC, CPVC, and other industrial-grade piping materials, making them a smart choice for demanding environments.

Material & Compatibility

Made from Schedule 80 PVC, these Van Stone flanges deliver:

  • Greater wall thickness compared to Schedule 40 for higher tensile strength
  • Enhanced resistance to temperature and pressure (up to 150 psi and 140 degrees Fahrenheit) and corrosive chemicals
  • Resistant to degradation from metal contact in mixed-material systems
  • Compatibility with a wide variety of industrial piping systems and threaded fittings
  • Fitting size options from 1/2" to 12" for broad application flexibility

Their compliance with ASTM D1784 standards ensures reliable, long-term performance in industrial systems. This detailed attention to product details ensures dependable performance, system safety, and compatibility across applications.

Installation Tips

To ensure a secure and leak-proof installation:

  • Clean all contact surfaces before assembly
  • Use the correct gaskets and align bolt holes properly
  • Tighten bolts in a cross-pattern to evenly distribute pressure
  • Avoid over-tightening, which can crack the flange
  • If gluing the stub-end, allow appropriate cure time before pressurizing the system

Ultimately, these best practices help maintain system integrity and reduce downtime.

Why Buy from Maxx Supply?

Choosing Maxx Supply for your Schedule 80 Van Stone Spigot needs means benefiting from:

  • A wide range of hard-to-find and large-diameter items in stock
  • Fast shipping to keep your projects on schedule
  • Bulk discount pricing for contractors and large-scale jobs
  • Trusted by plumbing contractors, facility managers, and industrial engineers across the U.S.

Shop confidently with Maxx Supply — your go-to source for high-pressure plumbing solutions and industrial-grade pipe fittings.