2 inch No Hub Heavy Duty Coupling

2" x 2" No Hub Heavy Duty Coupling – Specified for Cast Iron DWV System Integrity

The 2" x 2" No Hub Heavy Duty Coupling by Fox Foundry is engineered to deliver consistent, high-strength performance in drainage, waste, and vent (DWV) systems using cast iron piping. This coupling is fabricated for secure joining of no hub pipe and fittings where structural reliability and code compliance are required in both commercial and multi-story residential builds.

Built to meet CISPI 310 and ASTM C1277 performance standards, the coupling features a multi-segment stainless steel shield and torque-controlled clamp bands over a resilient molded rubber gasket. The design ensures uniform compression across the joint, minimizing deflection and resisting shear under vertical or horizontal loading conditions.

Key Performance Characteristics

• ✅ Stainless Steel Shield Assembly – Shield is constructed of series 300 stainless steel to resist corrosion and provide mechanical rigidity over time.
• ✅ High-Performance Gasket – EPDM rubber gasket provides long-term sealing against vibration, thermal expansion, and effluent exposure.
• ✅ Precision-Fit No Hub Interface – Machined for compatibility with standard no hub pipe diameters, supporting axial alignment and secure fit.
• ✅ Heavy-Duty Band Clamps – Designed for torque wrench installation, ensuring uniform 60 in-lbs torque retention around the circumference.
• ✅ Third-Party Certified – Listed and tested in accordance with Uniform Plumbing Code and relevant ASTM specifications for sanitary system use.

Application Areas

This coupling is intended for use in a variety of cast iron DWV applications, including:

• Vertical and horizontal waste stack installations
• Commercial drainage lines and equipment traps
• High-load environments such as institutional buildings or mechanical rooms

Material Compliance

Fox Foundry components are manufactured to meet municipal and state code requirements for non-pressure DWV systems using cast iron. All gaskets and band materials comply with industry corrosion resistance and elastomeric sealing standards.

Technical Specifications

• Nominal Size: 2" x 2"
• Connection Type: No Hub, Non-Hub Cast Iron
• Shield: 300 Series Stainless Steel
• Gasket: Molded EPDM
• Clamps: Stainless Steel with Hex Head Screws
• Compliance: ASTM C1277, CISPI 310, UPC Listed

Fox Foundry’s heavy-duty no hub couplings are built for contractors who require reliable mechanical joints for cast iron piping systems. Their construction supports long-term service life in high-use, high-load DWV assemblies without the risk of joint failure or misalignment.