Zurn z742-3sp Light Duty Cast Iron P-trap Floor Drain

Product Description

The ZURN z742-3sp is a light-duty cast iron floor drain with an integral double-wall P-trap and a 3-inch spigot outlet. The body features a Dura-Coated cast iron construction designed to resist corrosion in wet service environments. It includes a ball float type backwater valve that prevents sewage backflow through the drain, an internal bronze cleanout for maintenance access, and a light-duty loose slotted grate. Top diameter options of 8, 10, or 12 inches allow the drain to be specified for different floor opening sizes. Licensed plumbers install this drain during new construction or renovation of commercial and light commercial floor drainage systems.

The z742-3sp is suited for interior concrete floor applications in light commercial or institutional settings where a trapped floor drain with backwater protection is required. The 3-inch spigot outlet connects to standard below-slab waste piping. The integral double-wall trap design retains a water seal to block sewer gases from entering the occupied space. Top options include cast iron, polished bronze, or polished nickel bronze grates, allowing the installer to match finish requirements for the specific application.

Key Features

• Dura-Coated cast iron body for corrosion resistance in wet environments
• Integral double-wall trap design maintains water seal and blocks sewer gas entry
• Ball float type backwater valve prevents sewage backflow through the drain body
• Internal bronze cleanout plug provides maintenance access without excavation
• Light-duty loose slotted grate included; cast iron, polished bronze, or polished nickel bronze top options available
• 3-inch spigot outlet for connection to standard below-slab waste piping
• Top diameter available in 8, 10, or 12 inches to fit different floor opening specifications

Compatibility

The z742-3sp is part of the ZURN Z742 drain series and accepts 8-inch, 10-inch, or 12-inch diameter top grates in cast iron, polished bronze, or polished nickel bronze finishes. The 3-inch spigot outlet is designed for connection to 3-inch below-slab drain piping in light-duty commercial floor drain applications.

Installation Notes

This drain is installed by licensed plumbers in accordance with the International Plumbing Code (IPC) and applicable local amendments. The drain body is set into the concrete slab at rough-in, with the spigot outlet connected to the waste line before the pour. Shut off all water service to the affected area before making any connections or performing cleanout service. Do not overtighten the internal cleanout plug; use only hand tools appropriate for bronze fittings to avoid thread damage.

Technical Specifications

• Body Material: Dura-Coated cast iron
• Outlet Type: Spigot
• Outlet Size: 3 inches
• Top Diameter Options: 8, 10, or 12 inches
• Trap Type: Integral double-wall P-trap
• Backwater Valve: Ball float type
• Cleanout: Internal bronze
• Grate Type: Light-duty loose slotted
• Duty Rating: Light duty

Standard Information

• Brand: ZURN
• Manufacturer Part Number: z742-3sp