LUWA® Irrigation and aeration

The GEFA LUWA system serves to simultaneously water and aerate the tree from just one opening. Thanks to the innovative technology of the filler neck, no water can get into the aeration line and is guided purposefully into the root areas.

Efficient aeration and irrigation is particularly vital for trees in urban areas, especially in the case of tree pit construction

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Specialist advisor Dipl.-Ing. Andre Carstens

Your initial contact in case of queries concerning the securing of young trees and the planning of automatic irrigation systems.

+49 (0) 2151 / 49 47 41
Email Andre Carstens

LUWAIrrigation and aeration

Revolution in the irrigation and ventilation of newly planted trees in urban areas

Efficient ventilation and irrigation is there Particularly vital for trees in urban areas, especially with planting pit construction 2. The problems in urban areas are known: Cramped site conditions, overbuilt root space, disturbed soil conditions, massive compression and a lack of gas exchange.

After planting, watering should first be carried out using a watering trough or a watering edge on the bale. Later, however, watering from above would encourage the roots to grow close to the surface.

The following points must be observed when irrigation of the plant pit is deeper using drainage pipes:

• The chimney effect of these pipes must be largely prevented.

• The filler neck must not be too large, as large amounts of water quickly increase the risk of clogging.

Under paved areas, the rootable space cannot be watered and ventilated from above without special devices. In known systems, there is a risk that irrigation will take place via the ventilation devices. This was the starting point for the development of the GEFA LUWA® system.

With the LUWA® system, GEFA is making its contribution to the optimal care of our trees. Developed with leading tree experts, the system ensures perfect growing conditions.

The innovative, consistently well thought-out technology can be used at various locations without any problems. Achieve the greatest possible ecological and economic benefit with your next tree planting.

The LUWA® system allows ventilation and irrigation to be carried out through just one filler neck without water being able to get into the ventilation pipes. In the ground, water and air are individually directed into the desired areas. The chimney effect and possible silting up are largely avoided.

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One filler neck - two completely separate lines:

One filler neck - two completely separate lines:

By using the LUWA® system under paved surfaces, the number of filler necks is minimized. Accidental watering into the ventilation line is therefore impossible. The irrigation and ventilation lines can be laid horizontally as well as vertically, depending on the local conditions. A chimney effect is largely avoided, and even completely prevented when a LUWA® system including siphon is installed. A throttled water flow prevents silting up or fine grain displacements.

• The installation of separate systems is no longer necessary. • This results in greatly reduced installation and material costs.

Adapter for automatic irrigation

Adapter for automatic irrigation

In order to water plant pits that are equipped with the LUWA® system, it was previously necessary to fill in the water using a hose through the GEFA LUWA® cap. If there are several locations, this is not only very complex but also time-consuming.

The new adapter for the GEFA LUWA® system enables connection to an automatic irrigation system. A nozzle specially matched to the system with an integrated flow rate regulator (12 l / min) prevents water splashing outwards and ensures an even filling with water.

The adapter is available in two different lengths; the short version measures 118 mm in height and the long version 500 mm. The long version can be shortened if necessary

An automatic irrigation system can be connected to a PE line using an SBE and a flexible hose.

Advantages of the LUWA® adapter

• Connection for autom. Irrigation • Two variants for different installation depths • Interchangeable flow regulator • GEFA LUWA® cap fits the system • The long version can be shortened • Great time savings

Adapter types

• LUWA® adapter short (118 mm) DN 100 for the GEFA LUWA® system with connection for an automatic irrigation system. • LUWA® adapter long (500 mm) DN 100 for the GEFA LUWA® system with connection for an automatic irrigation system.

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AirMax tree aeration

AirMax tree aeration

Many (young) trees, bushes and hedges in urban areas suffer from a lack of oxygen. The AirMax ventilation system has been developed to efficiently improve these shortcomings and is also very easy to install.

Oxygen to the roots

All AirMax tubes have been specially perforated for better diffusion. To prevent silting up, the ventilation pipes are covered with a sock.

AirMax properties

• Filter sock against clogging • Extra slits for better ventilation • Polyethylene (PE) connectors & caps • Polypropylene (PP) ventilation tubes • 100% recyclable

AirMax Set Standard (up to 25 cm

• 6.3 m¹ ventilation pipe PE 80 mm with hose • 2 x T-piece PE 80 mm • 4 x sheets PE 80 mm • 2 x click end cap PE 80mm

AirMax Set Standard + (above <25 cm

• 10.5 m¹ ventilation pipe PE 80 mm with hose • 2 x T-piece PE 80 mm • 4 x sheets PE 80 mm • 2 x PE click end caps 80 mm • 2 x PE connecting sleeves 80 mm

Questions about AirMax?

 

  • LUWA® System

    The LUWA® system by GEFA Fabritz merges irrigation and aeration by precisely directing both air and water to the tree's root area. These advanced LUWA® systems aim to support root growth, improve tree vitality, and alleviate stress from drought or compacted soils. Efficient aeration and irrigation is vital for trees in urban areas, especially in the case of tree pit construction

    Tree irrigation

LUWA®

IRRIGATION AND AERATION

The problems in urban areas are well-known: confined spaces, built-over root zones, disrupted soil conditions, compaction, and insufficient gas exchange. These challenges significantly hinder healthy tree growth and long-term vitality. Medium- and long-term solutions include aeration pipes and irrigation rings, which effectively come into play after initial care (e.g., using watering basins or irrigation bags).

The issue with these separate individual solutions: there is a serious risk that irrigation occurs through the aeration devices, preventing water from properly reaching the root zone. A more integrated approach is essential to ensure water and air are efficiently delivered to where they are needed most.

BEWÄSSERUNG UND BELÜFTUNG DES BAUMES

LUWA®

LUWA®

THE SYSTEM SEPARATOR

For planting pit irrigation with drainage pipes, the following points should be considered:

  • The chimney effect of these pipes must be largely prevented.
  • The filling nozzle must not be too large, as high water volumes increase the risk of silting.

By using the LUWA® system under paved areas, the number of filling nozzles is minimized. Accidental irrigation into the aeration line is thus eliminated. The pipes can be laid according to local conditions. The chimney effect is largely avoided, and with the installation of a LUWA® system including a siphon, it is completely prevented. A throttled water flow prevents silting or fine particle displacement. Installation is possible under both sealed and unsealed surfaces.

Irrigation and aeration in a single system – with only one filling nozzle – featuring two completely separate lines for irrigation and aeration. This ensures that, even during heavy rainfall, no water enters the aeration line. This innovative system guarantees optimal growth conditions.

NOTE: the LUWA system is a technical separator. Drainage pipes, fittings, or connectors are not part of the system and must be procured separately.

LUWA®

IRRIGATION AND AERATION

The GEFA LUWA system enables simultaneous irrigation and aeration of trees through a single opening. Thanks to the innovative filling nozzle design, water cannot enter the aeration line and is efficiently directed to the root zones. Effective aeration and irrigation are essential for urban trees, especially in planting pit construction Type 2.

Revolution in Tree Irrigation and Aeration

The challenges in urban areas are well-known: confined planting spaces, built-over root zones, disrupted soil conditions, compaction, and insufficient gas exchange. After planting, irrigation should be performed on the root ball using a watering basin or edge.

Buy LUWA®

LUWA®

The LUWA® system allows both aeration and irrigation to be conducted through a single filling nozzle, ensuring no water enters the aeration pipes. Water and air are individually directed to the desired areas underground. The chimney effect and potential silting are largely avoided. One filling nozzle – two completely separate lines:

  • Separate openings for installation become unnecessary.
  • This results in significantly reduced installation and material costs.

By using the LUWA® system under paved surfaces, the number of filling nozzles is minimized. Accidental irrigation into the aeration line is thus excluded. The pipes can be installed to suit local conditions. The chimney effect is largely avoided, and with the inclusion of a siphon in the LUWA® system, it is completely eliminated. A controlled water flow prevents silting or fine particle displacement. Installation is possible under both sealed and unsealed surfaces.

BUY LUWA®

LUWA® Siphon

The LUWA® system enables aeration and irrigation to be managed through a single filling nozzle, ensuring no water enters the aeration pipes. Underground, water and air are individually directed to the desired areas. One filling nozzle – two completely separate lines:

  • Separate openings for installation are no longer needed.
  • This leads to significantly reduced installation and material costs.
  • Complete elimination of the chimney effect.

By using the LUWA® system under paved surfaces, the number of filling nozzles is minimized. Accidental irrigation into the aeration line is effectively excluded. The pipes can be laid to match local conditions. The use of the LUWA siphon ensures that the chimney effect is entirely suppressed. A controlled water flow prevents silting or fine particle displacement. Installation is possible under both sealed and unsealed surfaces.

Buy LUWA®

LUWA®

DETAILS

Filter against foreign objects

Air- and water-permeable filter prevents the entry of leaves or debris. To remove accumulated dirt, simply take out the filter.

Irrigation connection 

Connection compatible with DN 80 adapters. To place a watering ring around the root ball, the use of a T-adapter is possible.

System separator

The sophisticated technology separates water from the air supply, preventing water from entering the ventilation line.

Ventilation connection

Connection for deep ventilation, compatible with all DN 100 pipes.

LUWA®

LUWA® COMPONENTS AND ACCESSORIES

  • LUWA® System
    • LUWA® system for watering and aerating street trees, including extension piece and filter.  
    • LUWA® system + siphon for ventilation and irrigation systems, including preassembled siphon for drainage pipe DN80, extension piece, and filter.  
    • The installation of separate systems becomes unnecessary, significantly reducing material costs.
  • LUWA® Drainage pipes
    • LUWA® DN80/100, flexible, yellow, slotted, on a 50 m roll.  
    • LUWA® DN80/100 CocoFill, flexible, yellow, slotted, on a 50 m roll.
  • LUWA® Connection pieces
    • T-connector DN 80/100, for LUWA® connection adapter DN 80/100 for GEFA LUWA drainage pipe.

    • DN 80/100 sleeve for drainage pipe DN 80/100.
    • LUWA® connection filter for connection adapter.
  • LUWA® Cap
    • Corrosion-resistant aluminum alloy with V2A swing-away cover cap. Height: 85 mm.

    • Ground anchor LUWA® cap for securing the cap to the LUWA®.
    • End cap made of PP plastic; 150 x 150 mm, 155 mm high, black, with dirt trap.
  • LUWA® Adapter
    • Short adapter (118 mm) DN 100 for the LUWA® system with a connection for an automatic irrigation system.  
    • Long adapter (500 mm) DN 100 for the LUWA® system with a connection for an automatic irrigation system.

We are here to assist.

Product specialists André Carstens and Rafał Cegielski

Landscape planning graduate engineer André Carstens is your local contact in northern Germany and our specialist for questions regarding young tree supports. Together with Rafał Cegielski, he handles CAD drawings for automated irrigation solutions for gardens and green spaces. IT specialist Rafał Cegielski also manages the Polish market and is responsible for graphics.

Andre +49 (0) 2151 / 49 47 41

Rafal +49 (0) 2151 / 49 47 75

Email AndreEmail Rafal

General Catalog

For more information about our products and organization, you can download our General Catalog.