Zurn Z508 / ZB508 / ZN508 9" Extra-Heavy-Duty Commercial Floor Drain

Product Overview

The Zurn Z508 / ZB508 / ZN508 Extra-Heavy-Duty Floor Drain is engineered to handle the toughest commercial and industrial drainage applications. Featuring a Dura-Coated cast iron body with a 9" diameter top, this drain is built to withstand high-traffic environments while providing long-lasting durability.

Available with a cast iron, polished bronze, or polished nickel bronze top, the Z508 series offers design flexibility without sacrificing performance. Each unit comes equipped with a deep flange slotted grate, seepage pan, and a combination membrane flashing clamp and frame for secure, watertight installation. Ideal for commercial kitchens, mechanical rooms, warehouses, and other heavy-use spaces, this drain ensures reliable water management and simplified installation with Zurn’s patented contractor solutions.

Features & Benefits

• Extra-heavy-duty construction for demanding commercial drainage needs

• Dura-Coated cast iron body ensures maximum strength and corrosion resistance

• Choice of cast iron, polished bronze, or polished nickel bronze tops

• 9" deep flange slotted grate provides superior flow capacity

• Integrated seepage pan enhances system reliability

• Combination membrane flashing clamp and frame for watertight installation

• Compatible with Zurn’s patented contractor installation solutions for faster, easier setup

Specifications

• Model Numbers: Z508 (cast iron), ZB508 (polished bronze), ZN508 (polished nickel bronze)

• Diameter: 9" (229mm) top grate

• Body Material: Dura-Coated Cast Iron

• Top Options: Cast Iron, Polished Bronze, or Polished Nickel Bronze

• Outlet: Bottom outlet

• Components: Deep flange slotted grate, seepage pan, flashing clamp & frame

• ALT SKUs: Z508, Z-508, Z 508, 508; ZB508, ZB-508, ZB 508; ZN508, ZN-508, ZN 508

Installation Tips

• Verify outlet size compatibility before installation.

• Position the drain flush with finished floor height for proper flow.

• Use the membrane flashing clamp for watertight sealing in waterproofed floors.

• Select the appropriate top finish (cast iron, bronze, or nickel bronze) based on traffic and aesthetic needs.

• For optimal results, follow local plumbing codes and guidelines for commercial drainage.

FAQs

Q: What applications is the Z508 series best suited for?
It’s ideal for heavy-use commercial and industrial spaces such as kitchens, warehouses, mechanical rooms, and public facilities.

Q: What is the difference between Z508, ZB508, and ZN508?

• Z508: Cast iron top

• ZB508: Polished bronze top

• ZN508: Polished nickel bronze top

Q: Does this drain include a flashing clamp?
Yes, it comes with a combination membrane flashing clamp and frame for secure installation.

Q: What makes this drain extra-heavy-duty?
Its Dura-Coated cast iron construction and deep flange design allow it to withstand extreme load and traffic conditions.