4 inch Cast Iron Soil 1/16 Bend No Hub x No Hub

4" Cast Iron Soil 1/16 Bend No Hub – Engineered for Reliable Drainage Transitions

The 4" Cast Iron Soil 1/16 Bend No Hub is a key component in drain, waste, and vent (DWV) systems where subtle directional changes are required. Fabricated to meet the rigorous standards of commercial and residential plumbing, this fitting delivers consistent performance, dimensional accuracy, and long-term reliability in gravity flow applications.

Advantages of No-Hub Cast Iron Soil Pipe Fittings

• ✔️ 1/16 Bend (22-1/2° Angle) – Designed for smooth directional transitions in piping systems, reducing turbulence and maintaining proper flow.
• ✔️ Heavy-Duty Cast Iron Construction – Manufactured for structural integrity under standard DWV loads and stresses.
• ✔️ Internal and External Corrosion Resistance – Finished to withstand sewer gases and moisture-rich environments over time.
• ✔️ Standardized No-Hub Connections – Compatible with stainless steel no-hub couplings for fast and secure mechanical joints.
• ✔️ Sound-Dampening Properties – Naturally reduces noise from water flow and fixture use, often preferred in multi-unit and commercial buildings.

Specifications

• Size: 4-inch nominal
• Bend Angle: 22-1/2° (1/16 bend)
• Material: Cast Iron per ASTM A888 / CISPI 301
• Connection: No-Hub (mechanical joint with stainless steel coupling)
• Application: Soil, waste, and vent drainage systems
• Certifications: Conforms to NSF® standards and UPC®/IAPMO® listings

Installation Notes

Designed for use with no-hub couplings and torque-controlled clamping, installation requires accurate alignment and proper support in accordance with plumbing code. The use of torque wrenches and shielded couplings ensures consistent performance and code compliance. Installation should follow applicable local and national plumbing codes for cast iron systems.

Typical Applications

This 1/16 bend is often used to adjust pipe direction slightly in horizontal or vertical DWV runs. Its smooth interior walls maintain optimal flow conditions and help avoid buildup or blockages. Common in multi-story buildings, hospitals, schools, and commercial facilities where acoustic and fire-resistance performance are priorities.

Did You Know?

Cast iron’s ability to meet both performance and sustainability criteria has kept it in use for over a century in DWV systems. It’s 100% recyclable and remains one of the most durable choices for drainage infrastructure.

The 4" Cast Iron Soil 1/16 Bend No Hub delivers trusted performance for demanding DWV applications. Backed by decades of proven durability and engineered for straightforward integration into no-hub piping systems, it’s the professional’s choice for dependable drainage transitions.