4" Cast Iron P-Trap, No Hub

Charlotte Pipe 517 – 4" Cast Iron P-Trap for Sanitary Drainage Systems

The Charlotte Pipe 517 is a 4-inch cast iron P-trap designed for use in DWV (drain, waste, and vent) systems. This heavy-duty fitting is manufactured to ASTM A74 standards and is commonly used in commercial, industrial, and residential drainage applications where long-term reliability, sound attenuation, and structural integrity are required.

Key Features

• Material: Cast iron, produced using a minimum of 95% post-consumer recycled content
• Configuration: 4" nominal size with spigot connections
• Application: Intended for horizontal drainage lines to prevent sewer gas from entering occupied spaces
• Performance: Naturally sound-deadening and capable of withstanding high load conditions in concealed or exposed installations
• Standards: Complies with ASTM A74 and CISPI specifications for cast iron soil pipe and fittings

Technical Specifications

• Nominal Size: 4 inches
• End Type: Spigot
• Body Style: P-Trap, cast with integral trap seal
• Material Standard: ASTM A74
• Temperature Range: Suitable for use within DWV systems operating between 32°F and 212°F

Installation Considerations

Proper installation of cast iron DWV components requires alignment with local plumbing codes. The 517 P-trap must be joined using standard hub-and-spigot methods with approved no-hub couplings or lead/oakum seals. It is recommended that installation be performed by licensed professionals, especially in multi-story or high-traffic applications where structural support and system compliance are critical.

Applications

• Commercial and institutional DWV systems
• Subgrade or slab installations requiring code-compliant P-traps
• Renovation or retrofit work requiring compatibility with existing cast iron infrastructure

Compliance and Durability

The Charlotte Pipe 517 P-trap meets applicable codes for non-pressure sanitary systems and is approved for use in both above-ground and underground piping layouts. The cast iron body provides natural fire resistance, noise control, and long service life with minimal maintenance requirements.