No-Hub Couplings
Cast Iron Hubless Couplings: Commercial-Grade DWV Connectors
No Hub Shielded Couplings provide professional-grade connections for cast iron hubless soil pipe and fittings in sewage, drainage, waste, and ventilation (DWV) systems. Specifically designed for non-pressurized, gravity-fed applications, these versatile couplings accommodate both above-ground and below-grade installations with simple, reusable design features. Available in sizes from 1.5" to 10" (38 mm to 381 mm) with larger custom sizes up to 15" available, each coupling incorporates a single neoprene elastomeric gasket housed within a corrugated 301 series stainless steel shield.
The coupling system features adjustable 301 series stainless steel worm gear clamp bands that accommodate variations in pipe outside diameters, with configurations varying by size: two bands for 1.5" to 4" pipes, four bands for 5" to 10" sizes, and six bands for larger applications. Engineered for optimal reliability, the axially slotted clamp design enables independent band adjustment while integrated sealing O-rings positioned beneath each clamp stabilize connections and enhance overall sealing performance. Installation requires calibrated torque equipment set to 60 in/lbs (6.78 N·m) for proper engagement, ensuring watertight performance and long-term durability in demanding DWV applications.
Features
- Size Range Flexibility: Available from 1.5" to 10" (38-381 mm) with custom larger sizes to 15".
- Variable Band Configuration: 2-6 worm gear clamp bands depending on pipe diameter.
- Corrugated Shield Design: 301 series stainless steel with strategically positioned intermittent corrugations.
- Neoprene Gasket System: Single-piece molded polychloroprene elastomeric gasket.
- Axially Slotted Clamps: Independent band adjustment accommodating pipe OD variations.
- Integrated O-Ring Sealing: Positioned beneath each clamp for enhanced sealing performance.
- Reusable Design: Simple installation and removal for maintenance flexibility.
- Dual Installation Capability: Suitable for above-ground and below-grade applications.
- Precision Torque Specification: Calibrated installation at 60 in/lbs with 5/16" hex head screws.
Cast Iron Connections: Professional DWV Performance That Delivers.
Universal Cast Iron Compatibility: Connects all cast iron hubless soil pipe and fittings with reliable sealing.
Dimensional Accommodation: Extended axial slots handle variations in pipe outside diameters and fitting tolerances.
Superior Corrosion Resistance: 300 series stainless steel components deliver exceptional environmental durability.
Enhanced Load Distribution: Optimized contact surfaces provide superior load-bearing capacity and shear force resistance.
Installation Efficiency: Simple torque-controlled assembly with reusable design reduces labor time and costs.
Watertight Performance: Engineered sealing system prevents leaks in gravity-fed DWV applications.
Structural Alignment: Corrugated shield maintains proper joint alignment while preserving necessary flexibility.
Environmental Versatility: Performs reliably in multiple environmental conditions and installation scenarios.
Professional Standards: Meets rigorous ASTM and CISPI testing requirements for commercial and industrial applications.
Additional Resources
Sizing Tables
No Hub Coupling Sizing
