4 inch x 4 inch x 2 inch Cast Iron Soil Reducing Tapped Wye No Hub x No Hub x No Hub

4" x 2" Cast Iron Reducing Tapped Wye – Specified for Sanitary Drainage Systems

The 4" x 2" Cast Iron Soil Reducing Tapped Wye is a heavy-duty drainage fitting used to transition between pipe sizes in gravity sanitary systems. It is engineered for applications requiring branch connections at a 45-degree angle and includes an integrally cast 2" threaded tap for branch extension or cleanout access.

Manufactured to ASTM and CISPI specifications, this fitting is designed for long-term reliability in underground or above-ground installations. It is compatible with no-hub cast iron piping systems and supports performance-critical plumbing assemblies in commercial, industrial, and multi-family structures.

Performance Characteristics

This fitting offers structural integrity, dimensional consistency, and corrosion resistance for professional-grade sanitary systems:

• ✅ Gray Cast Iron Body Fabricated from ASTM A888 or CISPI 301-compliant cast iron for high compressive strength and impact resistance.
• ✅ Tapped 2” Branch Female-threaded outlet allows for secure transition to threaded pipe or accessories such as cleanouts or vents.
• ✅ Uniform Wall Thickness Maintains consistent hydraulic performance and mechanical strength across all connections.
• ✅ Lead-Free and Flame-Resistant Non-combustible and suitable for penetrations through rated walls and floors in accordance with NFPA standards.

Dimensional Data & Specifications

• Main Size: 4”
• Branch Size (Tapped): 2”
• Material: Cast Iron (ASTM A888 / CISPI 301)
• End Connections: Hubless (No-Hub) x Tapped Female Thread
• Use: Sanitary DWV applications

Installation Guidelines

This fitting is designed for use with no-hub couplings conforming to ASTM C1277 or CISPI 310. Mechanical joint assembly should follow torque specifications for stainless steel bands and be installed with approved tightening tools. Pipe preparation and alignment are critical to ensure proper fit and seal integrity.

Application Scope

Used in sanitary soil stacks, horizontal drain lines, and venting systems, the 4" x 2" reducing tapped wye supports multi-branch configurations where threaded connections are needed. Common in commercial restrooms, multi-unit buildings, and healthcare facilities for code-compliant system layouts.

Material Insight

Cast iron DWV systems are preferred in commercial construction due to their superior acoustic performance, resistance to fire, and long service life. The mass of cast iron also contributes to vibration damping in high-occupancy structures.

The 4" x 2" Cast Iron Reducing Tapped Wye provides a field-tested solution for sanitary plumbing installations requiring threaded access and reliable transitions. Specify this fitting for engineered systems demanding strength, code compliance, and long-term system durability.