4 inch Cast Iron Soil Service Weight Wye Service Weight Hub x Service Weight Hub x Service Weight Hub

4" Cast Iron Soil Pipe Wye – Service Weight, Hub x Hub x Hub

The 4-inch cast iron soil pipe wye is engineered for use in non-pressure drainage and vent applications. This fitting facilitates a 45-degree branch connection off the main run, allowing for efficient flow transitions in horizontal or vertical stacks. Manufactured to ASTM A74 standards, it is designed for use with hub and spigot cast iron pipe and is suitable for both residential and commercial building drainage systems.

Key Features and Performance

• Material: Gray cast iron, classified as service weight (SV) for robust, above-ground DWV systems.
• Configuration: Hub x Hub x Hub – compatible with traditional lead and oakum or compression gasket joints.
• Design Angle: 45° lateral branch for optimized flow and minimal turbulence.
• Standard Compliance: Conforms to ASTM A74 and is listed by NSF International for compliance with plumbing codes.
• Fire Resistance: Non-combustible material with inherent fire-stop capabilities, suitable for multi-level installations.

Technical Specifications

• Nominal Size: 4 inches
• Type: Wye fitting
• Connection Ends: Hub x Hub x Hub
• Body Construction: One-piece cast construction
• Standards: ASTM A74, NSF/ANSI 14, and UPC Listed

Installation Considerations

Use with traditional cast iron soil pipe systems in conjunction with properly fitted gaskets or a lead and oakum seal. Ensure fittings are aligned correctly to support directional flow and system integrity. Cut edges of pipe must be square and free of burrs prior to insertion into hub sockets. This fitting is not intended for use in pressurized systems or with no-hub pipe unless adapter couplings are used.

Common Applications

Typically used in DWV systems for branch takeoffs in vertical or horizontal stacks. Ideal for lavatory branches, floor drains, and waste arm offsets where space or flow direction necessitates a lateral connection.

Did You Know?

Cast iron piping and fittings offer superior noise attenuation compared to plastic systems, reducing transmitted sound in multi-floor installations and commercial structures.

The 4" Cast Iron Soil Pipe Wye provides proven reliability and performance for waste and vent applications. Designed for long-term service in demanding environments, it is a staple fitting in gravity-flow plumbing systems built to code and built to last.