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Zurn Z350 - Planting Area Drain

Zurn Z350 - Planting Area Drain

Zurn Z350 - Planting Area Drain

$3,621.55


FREE SHIPPING
SKU ZN350-2NH

The Zurn Z350 is a purpose-designed planter / planting area drain built to manage excess water in planters, rooftop gardens, atriums, and landscaped decks. It integrates seamlessly with planting media, waterproofing membranes, and soil systems while maintaining reliable water removal and system balance.

Key Features

  • Dura-Coated Cast Iron Body with Bottom Outlet — Strong, durable housing that resists corrosion in moist, soil-exposed environments.

  • Combination Invertible Membrane Clamp & Vertically Adjustable Nickel Bronze Head — Enables secure waterproofing sealing and lets you adjust the head height to match soil or surface levels.

  • Perforated Stainless Steel Standpipe + Dome — Helps relieve excess water safely while protecting planting media and preventing clogging.

Downloads:

Product Codes: Z350-2IC, Z350-3IC, Z350-4IC, Z350-2IG, Z350-3IG, Z350-4IG, Z350-2IP, Z350-3IP, Z350-4IP, Z350-2NH, Z350-3NH, Z350-4NH, Z350-2NL, Z350-3NL, Z350-4NL, ZB350-2NH, ZB350-3NH, ZB350-4NH, ZN350-2NH, ZN350-3NH, ZN350-4NH, ZB350-2NL, ZB350-3NL, ZB350-4NL, ZN350-2NL, ZN350-3NL, ZN350-4NL, Z350-SS

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 Z350 – Planting Area Drain: An Overview for Planters, Atriums, and Rooftop Gardens

A practical, pro-level overview of the Zurn Z350 Planting Area Drain—what it is, when to use it, and how to specify and install it correctly.

The Zurn Z350 Planting Area Drain is a purpose-built drain for planters and landscaped decks. In technical terms, it features a Dura-Coated cast iron body with a bottom outlet and an invertible membrane clamp—it’s rugged enough for soil exposure and integrates cleanly with waterproofing membranes so water exits where it should without compromising the planter or deck.

Zurn Z350 planter area drain installation schematic
Zurn Z350 – Typical Planter Installation Schematic

Why Choose the Z350 for Planting Areas?

  • Dura-Coated cast iron body – engineered for strength and longevity inside moist, soil-contact environments.
  • Invertible membrane clamp – securely ties into your waterproofing for watertight performance.
  • Vertically adjustable nickel-bronze head – set finished height to match soil or surface levels.
  • Perforated standpipe & dome – relieves excess water while protecting media and minimizing clogs.
  • Multiple outlet types – Inside Caulk (IC), Inside Gasket (IG), Threaded (IP), No-Hub (NH), and Neo-Loc (NL) to fit your piping method.

Where the Z350 Excels (Applications)

Use the Z350 in indoor atriums, rooftop promenade decks, green roofs, and ground-level planters where excess water must drain to protect plants, structures, and paving. The standpipe manages perched water levels for plant health, while the clamp collar maintains membrane integrity—meaning greener planters and drier structures.

Sizing & Outlets (Quick Reference)

  • Nominal outlet sizes: 2", 3", 4"
  • Outlet options: IC, IG, IP, NH, NL
  • Head: Nickel-bronze with clamp collar (vertically adjustable)
  • Approx. unit weight: ~22 lb (varies by configuration)
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Zurn Z350 dimensional schematic
Zurn Z350 – Dimensional & Component Schematic

Specifying the Z350 (What to Call Out)

  1. Model & prefix (Z350 / ZN350 / ZB350 depending on standpipe/dome material).
  2. Outlet size & type (2", 3", or 4"; IC, IG, IP, NH, or NL).
  3. Head finish (nickel-bronze) and vertical adjustment range.
  4. Membrane clamp requirement and waterproofing compatibility.
  5. Accessories (e.g., dome type, standpipe material, cleanout approach).

Tip: In planter assemblies, encase the perforated standpipe in clean gravel to promote percolation and reduce fines migration into the pipe.

Installation Overview

At a high level: set the drain body, connect the outlet, integrate the membrane clamp with your waterproofing, adjust the head to grade, and install the perforated standpipe encased in gravel. Always follow the project’s waterproofing details and manufacturer instructions.

1) Body & Outlet

Set the cast-iron body at elevation; connect to 2"/3"/4" outlet (IC/IG/IP/NH/NL as specified).

2) Membrane Clamp

Integrate the invertible clamp with the waterproofing per detail to maintain a watertight seal.

3) Standpipe & Media

Place the perforated standpipe; encase in gravel; backfill planter media; set head height and dome.

Case Study: Rooftop Atrium Planters – Mixed-Use Development

A mixed-use project specified 24 rooftop planters above occupied retail space. The design team needed reliable drainage that preserved the waterproofing membrane and maintained consistent soil moisture. They selected Zurn Z350 drains with 3" No-Hub outlets and invertible membrane clamps to tie into the PMMA membrane system. Each planter used a perforated stainless standpipe wrapped with gravel to manage the perched water table.

  • Outcome: No ponding at the surface; improved plant vigor measured by maintenance logs over 12 months.
  • Maintenance: Quarterly dome checks and seasonal media top-offs—no clog-related callbacks.
  • Risk reduction: The clamp collar preserved membrane integrity, helping avoid costly leak remediation.

Key Specs at a Glance

Body: Dura-Coated cast iron

Head: Nickel-bronze, vertically adjustable

Outlet sizes: 2", 3", 4"

Outlet types: IC, IG, IP, NH, NL

Standpipe: Perforated (stainless or brass by prefix)

Typical weight: ~22 lb (varies)

Frequently Asked Questions

What’s the advantage of the invertible membrane clamp?
It creates a positive, serviceable seal with the waterproofing system, protecting the structure beneath while allowing height tuning at the finish.
How do I choose the outlet type (IC, IG, IP, NH, NL)?
Match the outlet to the piping method on the project: Inside Caulk/Gasket for hubbed connections, Threaded for IPS, No-Hub for shielded couplings, and Neo-Loc for gasketed push-fit.
Do I need gravel around the standpipe?
Yes—encasing the perforated standpipe in clean gravel promotes percolation, reduces fines migration, and helps keep the dome free-flowing.
Is the head height adjustable after installation?
The nickel-bronze head is vertically adjustable to dial in final grade alignment as planter media settles or design elevations change.