Class 125 PVC Couplings

Looking for durable, high-performance Class 125 couplings to keep your piping systems running smoothly? Maxx Supply offers a reliable selection of Class 125 PVC couplings engineered to meet the demands of residential, commercial, and industrial systems. These couplings serve as essential connectors, joining two sections of PVC pipe securely and efficiently in both new builds and repair applications.

Class 125 indicates a pressure rating of 125 PSI at 73°F, making it a pipe fitting ideal for low-pressure and cold-water systems such as irrigation lines, industrial drainage, residential plumbing, and chemical transfer applications. Whether you’re managing a construction site or maintaining facility infrastructure, Maxx Supply’s couplings provide long-term performance and seamless connections.

All of our couplings are designed to resist corrosion and environmental stress, providing a leak-free solution that stands the test of time. With a variety of sizes and styles available, including threaded pipe fittings, slip-fit, and hubless reducer variants, our products meet a wide range of design and installation requirements.

Maxx Supply is proud to support contractors, engineers, and facility managers with expert customer service, fast order fulfillment, and competitive pricing. When performance matters, trust Maxx Supply to deliver Class 125 coupling solutions that meet ASME and industry standards.

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Product Features & Benefits

Maxx Supply’s Class 125 couplings are crafted for durability, ease of use, and system compatibility:

  • Made with high-grade PVC for excellent chemical and corrosion resistance.
  • Precision-molded for tight tolerances and a leak-free, secure fit.
  • Compatible with solvent welding or slip connection for fast, simple installs.
  • Available in standard and specialty configurations, including hubless and reducing couplings.
  • Designed for long service life with minimal maintenance needs.

Sizes and Connection Types

We stock a wide range of Class 125 coupling sizes and designs to meet your project’s exact needs:

  • Standard diameters: ½", ¾", 1", 2", 3", 4", and additional sizes available on request.
  • Connection types: Slip x Slip, Socket x Socket, Hubless.
  • Specialty options: Reducing couplings and large-diameter couplings for specialized systems.
  • Designed for compatibility with Schedule 40 PVC systems under the same pressure rating.

Class 125 Coupling Installation Tips

To ensure reliable performance and longevity, follow these best practices when installing:

  • Always clean and deburr pipe ends before installation.
  • Use primer and solvent cement when installing slip-style couplings for a watertight seal.
  • For threaded couplings, apply PTFE tape to threads and avoid overtightening to prevent cracking.
  • Confirm all components are Class 125-rated to ensure uniform pressure compatibility.
  • Avoid mixing with Schedule 80 or CPVC fittings unless verified for use under system conditions.

Common Applications for Class 125 Couplings

Our Class 125 PVC couplings are engineered for a wide variety of applications, including:

  • Residential and commercial plumbing systems for water distribution and drainage.
  • Irrigation and agricultural systems requiring low-pressure pipe connections.
  • Industrial venting and drainage where chemical resistance is critical.
  • Pool and spa plumbing setups involving non-pressurized water transfer.
  • Aquaculture operations and cooling tower plumbing.
  • Chemical transfer systems operating under ambient temperature and low PSI.

Example use case: A commercial greenhouse might rely on Class 125 couplings to connect irrigation lines across long spans of PVC piping, ensuring watertight joints while resisting fertilizer and chemical corrosion.