Abi Foundry 406 Double Quarter Bend 4 in No Hub Cast Iron

Product Description

The ABI FOUNDRY 406 is a double quarter bend fitting designed for drain, waste, and vent (DWV) piping systems. Cast from gray iron and finished with a no-hub end style, this 4-inch fitting provides a 180-degree change of direction using two 45-degree bends in a single body. It is installed by licensed plumbers in both residential and light commercial DWV applications where a compact, two-directional turn is needed within the drain stack or horizontal branch lines. The no-hub configuration accepts standard no-hub couplings and bands, making it compatible with existing cast iron no-hub piping systems.

This fitting is suited for underground, in-slab, or above-grade DWV installations at 4-inch nominal pipe size. Plumbers typically use it when routing waste lines around obstructions or when a return offset is required in a confined space. The cast iron construction meets the durability demands of commercial plumbing environments as well as long-service residential drain systems. It is not intended for pressure piping or potable water supply applications.

Key Features

• Double quarter bend geometry provides a compact 180-degree direction change in a single fitting
• 4-inch nominal no-hub end style accepts standard no-hub couplings for tool-joined assembly
• Cast iron construction offers high resistance to physical impact, fire, and long-term corrosion in DWV service
• Suitable for above-grade, in-wall, and below-grade drain and waste installations
• Complies with CISPI and ASTM standards typical for no-hub cast iron soil pipe fittings

Compatibility

Designed as an OEM-style no-hub cast iron DWV fitting for use with standard 4-inch no-hub cast iron soil pipe and couplings in residential and commercial drain, waste, and vent systems.

Installation Notes

Installation of no-hub cast iron DWV fittings is typically performed by a licensed plumber in accordance with the International Plumbing Code (IPC) or applicable local codes. Shut off the water supply and ensure the drain line is empty before cutting into an existing system. Use a torque wrench to tighten no-hub couplings to the coupling manufacturer's specified torque range. Do not use this fitting on pressurized supply lines or for any application outside of gravity-flow DWV service.

Technical Specifications

• Fitting Type: Double Quarter Bend (1/4 Bend)
• Nominal Size: 4 inches
• End Style: No Hub
• Material: Cast Iron
• Application: DWV (Drain, Waste, Vent)
• UNSPSC: 40172101

Standard Information

• Brand: ABI FOUNDRY
• Manufacturer Part Number: 406