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Zurn Z625 - Adjustable Isolation Deck Drain

Zurn Z625 - Adjustable Isolation Deck Drain

Zurn Z625 - Adjustable Isolation Deck Drain

$1,675.10


FREE SHIPPING
SKU ZN625-2NH

The Zurn Z625 is a versatile finish floor / deck drain designed to deliver reliable water removal while maintaining visual continuity on decorative floor or deck surfaces. Ideal for rooftop terraces, balconies, plazas, or interior/exterior interfaces, this drain balances form with function, ensuring drainage without compromising aesthetics.

Key Features

  • Flush & Low-Profile Grate: The drain’s grate is engineered to sit nearly level with surrounding finishes—tile, stone, pavers, or decorative decking—so it remains visually subtle.

  • Robust Construction for Harsh Environments: Built with durable, corrosion-resistant materials suited for wet conditions, foot traffic, and variable weather exposure.

  • Waterproofing Integration & Debris Control: Includes design elements to bond securely with waterproof membranes and a grate or strainer layout that helps prevent debris from entering, maintaining clear flow and reducing maintenance.

Downloads:

Product Codes: Z625-2IC, Z625-3IC, Z625-4IC, Z625-5IC, Z625-6IC, Z625-2IG, Z625-3IG, Z625-4IG, Z625-5IG, Z625-6IG, Z625-2IP, Z625-3IP, Z625-4IP, Z625-5IP, Z625-6IP, Z625-2NH, Z625-3NH, Z625-4NH, Z625-5NH, Z625-6NH, Z625-2NL, Z625-3NL, Z625-4NL, Z625-5NL, Z625-6NL, ZB625-2IC, ZB625-3IC, ZB625-4IC, ZB625-5IC, ZB625-6IC, ZB625-2IG, ZB625-3IG, ZB625-4IG, ZB625-5IG, ZB625-6IG, ZB625-2IP, ZB625-3IP, ZB625-4IP, ZB625-5IP, ZB625-6IP, ZB625-2NH, ZB625-3NH, ZB625-4NH, ZB625-5NH, ZB625-6NH, ZB625-2NL, ZB625-3NL, ZB625-4NL, ZB625-5NL, ZB625-6NL, ZN625-2IC, ZN625-3IC, ZN625-4IC, ZN625-5IC, ZN625-6IC, ZN625-2IG, ZN625-3IG, ZN625-4IG, ZN625-5IG, ZN625-6IG, ZN625-2IP, ZN625-3IP, ZN625-4IP, ZN625-5IP, ZN625-6IP, ZN625-2NH, ZN625-3NH, ZN625-4NH, ZN625-5NH, ZN625-6NH, ZN625-2NL, ZN625-3NL, ZN625-4NL, ZN625-5NL, ZN625-6NL,

View Our Full Selection of Zurn Drains →

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  • 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 Z625 – Adjustable Isolation Deck Drain

A purpose-built isolation deck drain designed for floating slab assemblies. The Z625 features an adjustable top, compression-style sealing, and components that help accommodate deck movement—so waterproofing, finishes, and drainage all work together.

In technical terms, the Z625 uses upper and lower Dura-Coated cast-iron bodies with a clamp collar, flexible gasket, and isolation nipple to manage movement between the finish deck and structure. In plain English: it’s a tough, height-adjustable drain that lets your floating slab move without compromising the drain connection or waterproofing.

Zurn Z625 adjustable isolation deck drain schematic with upper and lower cast-iron bodies, clamp collar, gasket, isolation nipple, and round grate
Zurn Z625 – Dimensional & Component Schematic

Key Features

  • Adjustable top assembly for precise alignment with tile, topping slabs, or pavers.
  • Isolation design using a flex gasket and isolation nipple to tolerate floating-slab movement.
  • Dura-Coated cast-iron bodies for long-term durability and stability.
  • Compression clamp collar promotes a reliable membrane tie-in.
  • Round grate engineered for deck traffic; security options available where tamper resistance is needed.
  • Outlet families: No-Hub (NH) and Neo-Loc (NL) offerings (verify sizes on submittal).

Where Z625 Excels

Specify Z625 for floating slab/isolation decks on podiums, terraces, breezeways, and corridors. The assembly helps keep drainage performance consistent as the deck moves seasonally, while the adjustable top makes final height and slope tuning straightforward.

Popular Options & Accessories

  • -C underdeck clamp; -R sump receiver for lower body support.
  • -TS top-secured; -VP vandal-proof hardware for public access areas.
  • -Y sediment bucket for debris management; -G galvanized finish; -DG Duresist grate (where applicable).
Zurn brand logo
Zurn – Isolation Deck & Finish-Floor Drainage
Zurn Z625 isolation deck drain installation schematic showing membrane clamp, adjustable top, and isolation assembly
Z625 – Installation Concept for Isolation Decks

Specifications at a Glance

Type: Adjustable isolation deck drain

Body: Dura-Coated cast iron (upper & lower)

Sealing: Clamp collar with flex gasket

Movement: Isolation nipple to decouple deck and structure

Top: Round grate; security and finish options available

Outlets: NH No-Hub and NL Neo-Loc (sizes per submittal)

Always verify dimensions, outlet family/size, finish options, and furnished accessories on the project submittal.

Installation Highlights

1) Rough-In & Support

Set the lower body at design elevation on the isolation deck and provide stable support per plans.

2) Seal & Isolate

Integrate the membrane with the clamp collar; install the flex gasket and isolation nipple to create a compression seal that tolerates movement.

3) Adjust & Finish

Use the adjustable top to match finished height/slope. Choose -TS/-VP where tamper resistance is required.

Case Study: Podium Terrace Over Retail

A mixed-use project added a podium terrace over retail space. Movement between the floating slab and structure had cracked previous drains. The team selected Zurn Z625 with No-Hub outlets, -TS top-secured hardware, and -R sump receivers. Result: clean membrane tie-ins, quick final elevation tuning, and zero leak-related callbacks through the first seasonal cycle.

Frequently Asked Questions

What is an “isolation deck” drain?
A drain built for floating slabs that move independently of the structural slab. Components like a flex gasket and isolation nipple help maintain a sealed path as the deck shifts with temperature or loading.
When should I choose No-Hub vs. Neo-Loc?
No-Hub (NH) suits cast-iron systems and common riser sizes. Neo-Loc (NL) is a mechanical seal option favored for speed and serviceability. Match to your piping standard and engineer’s submittal.
How does Z625 differ from Z627?
Both are isolation-deck designs with adjustable tops. The Z627 is positioned for heavier-duty service; the Z625 addresses standard isolation deck applications. Verify grate ratings, options, and outlet ranges on the project submittal.