Rainwater tank ROCKO 1800

in-groundPE

Overview
The Rocko Ø1800 is a vertical rainwater collection tank offering large storage capacity (3,200–5,000 L). It is suitable for households with higher water demands and for smaller commercial applications. The vertical tank design enables efficient use of space and facilitates transport and installation.

Key features

• High-capacity rainwater tank: 3,200–5,000 L (depending on height variant)
• Manufactured in one piece from polyethylene (PE) for a waterproof, long-lasting construction
• Wall thickness: 8–14 mm with integrated reinforcing ribs for maximum stability
• Can be installed underground or above ground
• Integrated DN600 manhole with cover and gasket for easy access, maintenance and inspection
• PE lid with adapter included in the basic package; DN600 lid load-bearing up to 200 kg
• Anchor holes for securing the tank to a concrete slab where required (e.g., high groundwater)
• PE ring available for easy installation of extensions and adaptation to terrain

Technical data and dimensions
Volume [L] | Code | Dimensions Ø x H [mm] | Cover [mm] | Weight [kg] | Notes
3,200 | 7100067260 | Ø1800 x 2350 | Ø800 | 136 | (variant: 3,200 L)
4,000 | 7100067270 | Ø1800 x 2700 | Ø800 | 155 | (variant: 4,000 L)
5,000 | 7100067280 | Ø1800 x 3100 | Ø800 | 182 | (variant: 5,000 L)

Included / optional items

• Standard basic package includes PE lid with adapter (DN600)
• Optional accessories: extension rings, dome shortener, anchoring accessories (depending on site requirements)

Installation
The Rocko shape allows for a relatively small excavation pit and reduced backfill material. Installation is possible both underground and above ground; the tank’s design often permits handling and installation without heavy construction equipment.

Advantages

• High storage capacity with a small footprint
• Quick and easy installation
• Easy to handle on construction sites
• Durable, corrosion-resistant and fully recyclable PE construction
• Height adjustment to terrain using dome shorteners and extension rings

Technical specifications

• Model: Rocko Ø1800
• Material: 100% polyethylene (PE), manufactured as a single-piece container
• Capacity range: 3,200 L / 4,000 L / 5,000 L (three height variants)
• Typical dimensions (Ø x H): Ø1800 x 2350 mm (3,200 L); Ø1800 x 2700 mm (4,000 L); Ø1800 x 3100 mm (5,000 L)
• Cover diameter: Ø800 mm (manhole DN600 access)
• Wall thickness: 8–14 mm
• Weight: approx. 136 kg (3,200 L), 155 kg (4,000 L), 182 kg (5,000 L)
• PE lid (DN600) load-bearing capacity: up to 200 kg
• Reinforcing ribs integrated for ground stability and resistance to soil loads
• Anchoring openings available for securing to slab in high groundwater areas
• Installation: suitable for underground and above-ground installation
• Maintenance: access via integrated DN600 manhole; easy to maintain
• Sustainability: corrosion-resistant, durable and fully recyclable PE