4 inch Cast Iron Soil Long Sweep Elbow No Hub

4" Cast Iron Long Sweep Soil Elbow – No-Hub Fitting for Drainage Applications

The 4" Cast Iron Long Sweep Soil Elbow is engineered to deliver low-turbulence directional changes in horizontal DWV systems. Its extended sweep radius reduces the risk of clogs and ensures consistent flow performance in soil and waste drainage piping.

Manufactured in accordance with ASTM A888 and CISPI 301 standards, this elbow is designed for no-hub installation with stainless steel shielded couplings. It is compatible with cast iron soil pipe systems in commercial, institutional, and residential buildings.

Product Features

• Nominal Size: 4 inches
• Type: Long Sweep 90° Elbow
• Connection: No-Hub (Hubless)
• Material: Cast Iron (ASTM A888 compliant)
• Surface Finish: Asphaltic coating for corrosion resistance

Key Advantages

• Hydraulic Efficiency: Long sweep geometry maintains velocity and reduces solid deposition in horizontal runs.
• Structural Integrity: Suitable for underground, above-ground, and multi-story installations with excellent load-bearing capacity.
• Fire and Noise Rated: Cast iron offers superior fire-resistance and natural sound attenuation compared to plastic DWV systems.
• System Compatibility: Can be joined to other no-hub cast iron fittings and pipe using mechanical couplings rated to ASTM C1277 or CISPI 310.
• Code Compliant: Accepted under the IPC, UPC, and local building codes for sanitary drainage systems.

Typical Applications

Commonly used in gravity-fed waste and vent systems, particularly where horizontal turns are required below floor slabs, behind walls, or in basements. The long sweep configuration supports smoother transitions between fixtures and main lines, minimizing maintenance points.

Installation Notes

Install with shielded no-hub couplings and torque to 60 in-lbs using a calibrated torque wrench. Ensure pipe ends are square, deburred, and properly aligned. For code compliance, all components should bear visible manufacturer and specification markings.

Technical Insight

Long sweep fittings are preferred for horizontal drainage due to their improved hydraulic performance over short radius bends. Their design also facilitates easier camera inspection and auger cleaning access in maintenance operations.

The 4" Cast Iron Long Sweep Soil Elbow is a durable, code-compliant fitting trusted by plumbing contractors for its longevity and installation flexibility in critical drain and waste systems.