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Zurn Z189 - 5" x 6" x 11" Scupper Drain

Zurn Z189 - 5" x 6" x 11" Scupper Drain

Zurn Z189 - 5" x 6" x 11" Scupper Drain

$1,124.55


FREE SHIPPING
SKU Z189-2NH

The Zurn Z189 is a 5-in × 6-in × 11-in roof scupper drain designed to provide overflow or secondary drainage, especially useful on pitched roofs or at parapet walls. Built with durability and clean aesthetics in mind, it helps protect roofing frameworks by giving excess water a reliable escape route.

Key Features

  • Dura-coated cast iron body with 45° outlet — Engineered for strength and resistance against corrosion, while the 45° outlet allows efficient flow through sidewalls without sharp bends.

  • Flush type aluminum strainer with aluminum frame & membrane flashing clamp — The flush grate keeps the surface neat, protects against debris, and the clamp ensures the roofing membrane is sealed securely.

  • Multiple finish & connection options — Variants include aluminum, polished bronze, and nickel bronze grates; outlet connection types such as threaded or no-hub; useful for matching building finishes and piping systems.

Downloads:

Product Codes: Z189-2IP-5x6x11, Z189-3IP-5x6x11, Z189-4IP-5x6x11, Z189-2NH-5x6x11, Z189-3NH-5x6x11, Z189-4NH-5x6x11, ZB189-2IP-5x6x11, ZB189-3IP-5x6x11, ZB189-4IP-5x6x11, ZB189-2NH-5x6x11, ZB189-3NH-5x6x11, ZB189-4NH-5x6x11, ZN189-2IP-5x6x11, ZN189-3IP-5x6x11, ZN189-4IP-5x6x11, ZN189-2NH-5x6x11, ZN189-3NH-5x6x11, ZN189-4NH-5x6x11,

Frequently Asked Questions

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Shipping

  • All items ship for free (standard ground, see map)
  • Call: (800) 604-5537 for pricing and shipping questions. Shipping estimates shown on the map pertain to this specific product only.
  • Orders typically ship in 1-3 business days. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.
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Zurn Z189 Scupper Drain: An Overview

Learn about the Zurn Z189 5" x 6" x 11" Scupper Drain—an efficient, durable solution for parapet wall and roof edge drainage.

Effective rooftop drainage goes beyond main roof drains—edge and wall areas also require specialized solutions. The Zurn Z189 Scupper Drain is designed to provide efficient drainage through parapet walls, protecting building envelopes from water intrusion and structural damage. With its compact dimensions and durable construction, the Z189 is ideal for a wide range of commercial and institutional applications.

Zurn Z189 Installation Schematic
Zurn Z189 Installation Schematic

What Is the Zurn Z189?

The Z189 is a 5" x 6" x 11" scupper drain engineered for installation in parapet or perimeter walls. It provides a direct drainage outlet that channels water away from the roof edge, reducing the risk of wall damage, leaks, and pooling. Its design ensures a secure, watertight fit and long-term durability.

Key Features & Benefits

  • Compact Design: 5" x 6" x 11" dimensions make it suitable for parapet walls and tight spaces.
  • Durable Construction: Built to withstand rooftop weather conditions and long-term exposure.
  • Efficient Drainage: Directs water safely away from roof edges and walls.
  • Watertight Fit: Ensures secure installation, minimizing the risk of leaks.
  • Versatile Use: Ideal for commercial, institutional, and residential buildings with parapet walls.
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Applications of the Z189

  • Parapet wall drainage
  • Roof edge water management
  • Commercial and institutional buildings
  • Retrofit or new construction projects

Installation Best Practices

To ensure maximum performance and watertight protection:

  • Install flush with the parapet wall opening for proper water flow.
  • Seal around the drain body to prevent water infiltration.
  • Ensure water is directed away from building walls and foundations.
  • Inspect regularly to remove debris and maintain drainage efficiency.
Zurn Z189 Schematic
Zurn Z189 Schematic

Case Study: Parapet Wall Retrofit

Challenge: An institutional building faced recurring wall leaks and paint damage due to poor roof edge drainage.

Solution: The facilities team installed Zurn Z189 Scupper Drains in key parapet wall locations. The compact design fit existing wall openings, while watertight installation protected the structure.

Outcome: The building’s drainage improved immediately, eliminating leaks and reducing long-term maintenance costs.

Conclusion

The Zurn Z189 Scupper Drain provides a compact, durable, and efficient solution for parapet and roof edge drainage needs. Its watertight design and proven reliability make it a trusted choice for both new construction and retrofit projects.

Frequently Asked Questions

Where is a scupper drain typically used?

Scupper drains are commonly installed in parapet or perimeter walls to direct water away from roof edges.

Does the Z189 work for retrofit projects?

Yes. Its compact size and simple installation make it ideal for both retrofit and new construction applications.

How do I maintain a Z189 Scupper Drain?

Regular inspection and debris removal will keep the drain operating efficiently and extend its service life.