Deck receptor drains are critical for handling stormwater on plazas, terraces, and balconies where architectural finishes meet functional performance. The Zurn Z122 12" Diameter Deck Receptor Drain is designed to sit flush within deck surfaces, delivering both reliability and a low-profile look. In this guide, we’ll walk through its features, applications, installation tips, and a case study example to show its performance in action.

Zurn Z122 Drain Schematic

What Is the Zurn Z122?

The Z122 is a 12-inch diameter deck receptor drain engineered to integrate seamlessly with plazas, decks, and rooftop terraces. Its larger size provides higher hydraulic capacity than smaller receptor models, making it suitable for zones with higher water volumes. Built with durability and long-term performance in mind, the Z122 is trusted in both new builds and retrofits where drainage reliability is paramount.

Key Features & Benefits

• 12" Diameter Design: Offers larger intake capacity for heavy rainfall and runoff.
• Flush Integration: Installed level with finished surfaces, preserving a clean and unobtrusive appearance.
• Durable Construction: Manufactured to withstand weathering, foot traffic, and long-term use.
• Debris Control: Compatible with strainer and cover options to reduce clogging risks.
• Versatile Application: Designed for decks, plazas, balconies, and other flat-surface drainage needs.

Zurn Brand Quality

Applications of the Z122

• Rooftop terraces and plazas
• Balconies on multi-story residential or commercial buildings
• Architectural decks with high stormwater demands
• Retrofit projects requiring greater hydraulic performance

Installation Best Practices

For best performance, the Z122 should be installed at low-slope collection points to ensure effective drainage. Waterproofing must be properly tied into the receptor body to maintain system integrity. Covers or strainers should be installed to prevent clogging, and regular inspections should confirm debris is cleared. With its larger diameter, proper hydraulic planning is critical to match outlet piping and anticipated flow rates.

Case Study: Urban Plaza Renovation

Challenge: An urban plaza in a mixed-use development faced pooling and slip hazards during heavy rainfall. Existing deck drains lacked the capacity for peak storm events.

Solution: The contractor specified the Zurn Z122 drains throughout the plaza surface. The 12" diameter receptors were installed flush with pavers and tied into upgraded stormwater piping.

Outcome: After installation, stormwater drained efficiently during peak events, eliminating pooling. Property managers reported improved safety, reduced maintenance calls, and confidence in long-term performance.

Conclusion

The Zurn Z122 12" Diameter Deck Receptor Drain is an ideal solution for plazas, terraces, and decks needing higher capacity drainage. With its robust construction, flush installation, and versatile applications, the Z122 offers a dependable balance of performance and design.