1-1/2 inch No Hub Soil Coupling

1-1/2" No-Hub Soil Coupling – Engineered for Code-Compliant DWV Installations

The 1-1/2" No-Hub Soil Coupling is a critical component in cast iron DWV (Drain-Waste-Vent) systems, offering secure, mechanical joint connections without the need for threading or welding. Designed for joining hubless cast iron pipe and fittings, it delivers dependable alignment and sealing under standard DWV operating conditions.

This coupling incorporates a neoprene gasket and stainless steel shield assembly, secured with torque-controlled clamps to ensure a uniform, leak-resistant seal. It is suitable for horizontal and vertical stacks in both commercial and residential systems, including under-slab, in-wall, and above-grade applications.

Advantages for the Field

Built to meet the performance and compliance requirements of plumbing professionals, this coupling offers:

• ✅ Shielded Design Galvanized or stainless steel outer shield with pre-attached clamps supports system rigidity and joint protection.
• ✅ ASTM-Certified Materials EPDM or neoprene gaskets resist common chemical exposures in drainage applications.
• ✅ Quick Installation Designed for torque-wrench tightening, allowing faster assembly without compromising code compliance.
• ✅ Minimized Downtime Ideal for retrofits, repairs, and new construction where speed and sealing reliability are essential.

Technical Specifications

• Size: 1-1/2" nominal diameter
• Connection Type: No-Hub (mechanical joint with shielded coupling)
• Gasket Material: Neoprene or EPDM per ASTM C564
• Shield and Clamp Material: Stainless Steel per CISPI 310 and ASTM C1277
• Application: Cast iron DWV systems – residential, commercial, and institutional use

Installation Guidelines

Use a calibrated torque wrench to tighten the coupling clamps uniformly to the required specification (typically 60 in-lbs). Ensure pipe ends are square-cut, clean, and properly aligned before installation. Follow all applicable codes and local jurisdictional requirements. Do not overtighten, and inspect clamps during pressure testing or system inspection.

Typical Applications

Frequently installed in horizontal and vertical waste and vent piping. Suitable for service weight or hubless cast iron in hospitals, schools, multi-unit buildings, and retrofitted drain lines where no-hub connections are preferred for alignment flexibility and code adherence.

Code Compliance

Meets or exceeds applicable standards including ASTM C1277, ASTM C564, and CISPI 310. Accepted by major model plumbing codes (UPC, IPC, and NSF standards for sanitary waste use).

Conclusion

The 1-1/2" No-Hub Soil Coupling provides a time-tested solution for joining cast iron drainage systems without compromising sealing integrity or structural performance. Engineered for long service life and ease of installation, it supports efficient, code-compliant DWV systems in a range of construction settings.