4 inch Cast Iron Soil Short Sweep Elbow No Hub

4" No-Hub Cast Iron Short Sweep Elbow – Soil and Waste DWV Applications

The 4" Cast Iron No-Hub Short Sweep Elbow is designed for directional changes in gravity drainage, waste, and vent (DWV) systems. This fitting provides a smooth 90-degree transition in horizontal piping runs, allowing efficient wastewater conveyance while maintaining compliance with dimensional code requirements for sweep radius.

Manufactured from ASTM A888 cast iron, the fitting is coated for corrosion resistance and impact durability. It is compatible with standard no-hub couplings and intended for use in systems that require flame-resistance, noise-dampening, and long service life. This elbow is suitable for both above-grade and below-grade installations in commercial, institutional, and multifamily residential environments.

Product Features

• ✅ Material: Cast iron per ASTM A888, CSA B70, and ISO 6594
• ✅ Connection Type: No-hub (plain-end) – for use with stainless steel shielded couplings
• ✅ Nominal Size: 4 inches
• ✅ Sweep Type: Short sweep radius – suitable for horizontal to vertical flow transitions where a long sweep is not required by code
• ✅ Finish: Bituminous coating for surface protection

Standards and Approvals

• ✅ Conforms to ASTM A888 and CISPI 301 standards
• ✅ Certified for use in DWV systems under UPC and IPC codes
• ✅ Third-party tested and UPC listed for compliance with national plumbing standards

Applications

This fitting is used in cast iron soil piping systems to redirect horizontal flows in drain lines with minimal hydraulic disturbance. Common installation areas include floor drains, branch waste connections, and vertical stack offsets. Cast iron is especially valued in fire-rated assemblies and high-rise construction where acoustic performance is critical.

Material Insight

Cast iron DWV fittings offer inherent sound attenuation, making them effective in noise-sensitive installations such as hospitals, schools, and multi-unit buildings. The dense material also provides added protection against vermin intrusion and flame spread compared to non-metallic alternatives.

Installation Requirements

Install using torque-limited shielded couplings per manufacturer instructions and local code requirements. All joints should be aligned and properly supported to prevent axial stress and ensure long-term joint integrity. Use a torque wrench calibrated to the coupling’s manufacturer specifications for proper band tightening.

The 4" Cast Iron Short Sweep No-Hub Elbow is a robust, code-compliant solution for DWV system configurations requiring consistent hydraulic flow and mechanical performance. Manufactured for longevity, dimensional accuracy, and structural stability in demanding infrastructure environments.