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    Marani GT020B Turbine Drive Hard Hose Irrigator

    Manufacturer: Marani

    When reliable field coverage demands more than a basic setup, Italian engineering delivers. Designed by Italy-based Marani Irrigazione, the Marani GT020B is a turbine drive hard hose irrigator built with a flanged gearbox, mechanical trolley lift, and dual HYDRA/ROYAL raingun nozzle sets — giving operators flexible, low-maintenance irrigation across demanding agricultural conditions.

    • Hose Diameter: 50–70 mm (1.97–2.76 in)
    • Hose Length: 150–250 m (492–820 ft)
    • Drive System: Turbine flanged on gearbox with external by-pass
    • Nozzle Range: HYDRA Ø12–16 mm / ROYAL Ø16–22 mm

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    Overview

    The Marani GT020B is a turbine-driven hard hose irrigator engineered and manufactured in Italy by Marani Irrigazione, a company with a long-standing reputation for precision irrigation equipment. Designed for medium-to-large-scale agricultural irrigation, the GT020B combines a robust turbine drive system with a hot-galvanised chassis and reel to deliver consistent, reliable performance across a wide range of field conditions. Available with polyethylene hose diameters from 50 mm to 70 mm (1.97 in to 2.76 in) and hose lengths up to 250 m (820 ft), this machine is built to serve demanding irrigation schedules season after season.

    What distinguishes the GT020B within the Marani hard hose irrigator range is the integration of the Computer Aqua System, which provides automated control over the irrigation run, and a turbine flanged directly onto the gearbox with an external by-pass for finely tuned flow management. The machine's hot-galvanised reel and chassis offer outstanding corrosion resistance, while the use of unadulterated raw material polyethylene hose ensures long service life under continuous field use. With configurations available for both the HYDRA and ROYAL raingun models and a broad nozzle selection, the GT020B offers genuine versatility for row crops, pasture irrigation, and general field watering across diverse agricultural operations.

     

    Key Features & Benefits

    • Turbine Flanged on Gearbox with External By-Pass: The direct flange mounting of the turbine onto the gearbox reduces mechanical losses and improves drive efficiency, while the external by-pass allows operators to precisely regulate the water flow driving the turbine without interrupting irrigation.
    • Computer Aqua System: An integrated automated control system manages the travel speed and irrigation programme, reducing the need for constant manual intervention and helping to achieve uniform water application across the full hose length.
    • Hot Galvanised Chassis, Turret, and Reel: All primary structural and rotating components undergo hot-dip galvanisation, providing superior long-term corrosion resistance compared to painted or cold-galvanised alternatives — a critical advantage in wet field environments.
    • Polyethylene Hose from Unadulterated Raw Material: The hose is manufactured from virgin-grade polyethylene, ensuring consistent wall thickness, pressure integrity, and flexibility across the full operational life of the machine.
    • Mechanical Lifting Device and Telescopic Mechanical Feet: These features allow straightforward adjustment of the machine's position and levelling on uneven ground, reducing setup time and improving stability without the need for additional equipment.
    • Galvanised Raingun Trolley on Variable Track Wheels: The raingun trolley is galvanised for durability and features variable track wheel spacing, enabling it to traverse different row spacings and field surfaces without damaging crops or soil structure.
    • Broad Nozzle Selection (HYDRA and ROYAL): The machine ships with two complete nozzle sets — HYDRA nozzles from Ø 12 to Ø 16 mm and ROYAL nozzles from Ø 16 to Ø 22 mm — giving operators the ability to optimise application rate and throw radius for different crop types, soil infiltration rates, and wind conditions.
    • Glycerine Bath Pressure Gauge: The glycerine-damped pressure gauge provides stable, accurate pressure readings even under the vibration typical of turbine-driven operation, supporting reliable monitoring of system performance in the field.
    • Power Take-Off (PTO) Compatible: Standard PTO integration allows the machine to be connected directly to a tractor, simplifying power supply management and making the GT020B compatible with standard farm machinery without additional ancillary equipment.
    • Safety Guards and 165/55 R14 4F Road Wheels: Comprehensive safety guards protect moving components during operation and transport, while the dedicated road wheels allow stable towing between fields and along farm tracks.

     

    Technical Specifications

    Specification Detail
    Manufacturer Marani Irrigazione
    Model GT020B
    Product Type Turbine Drive Hard Hose Irrigator
    Drive System Water turbine, flanged on gearbox with external by-pass
    Gearbox Included as standard
    Hose Diameter Range 50–70 mm (1.97–2.76 in)
    Hose Length Range 150–250 m (492–820 ft)
    Raingun Options HYDRA (nozzles Ø 12–18 mm) / ROYAL (nozzles Ø 16–22 mm)
    Raingun Trolley Hot galvanised, mounted on variable track wheels
    Wheels (Transport) 2 × 165/55 R14 4F
    Power Supply Power take-off (PTO)
    Chassis Treatment Hot-dip galvanised chassis, turret, and reel
    Hose Material Polyethylene from unadulterated raw material
    Control System Computer Aqua System
    Country of Manufacture Italy

     

    Available Hose Configurations

    Hose Diameter Hose Length Raingun Nozzle Range (mm) Performance Data
    50 mm (1.97 in) 250 m (820 ft) HYDRA Ø 12 / 14 / 16 50R1AT15250.pdf
    58 mm (2.28 in) 250 m (820 ft) HYDRA Ø 12 / 14 / 16 58R1AT15250.pdf
    63 mm (2.48 in) 200 m (656 ft) HYDRA Ø 14 / 16 / 18 63R1AT15200.pdf
    70 mm (2.76 in) 150 m (492 ft) ROYAL Ø 16 / 18 / 20 70R1AT15150.pdf

     

    Machine Dimensions

    GT020B Dimensions

    Diagram shows dimension reference points (A, B, C, etc.) on the machine.

    A B C D E F G H
    240 cm (94.5 in) 218 cm (85.8 in) 192 cm (75.6 in) 200 cm (78.7 in) 166 cm (65.4 in) 135 cm (53.1 in) 158 cm (62.2 in) 175 cm (68.9 in)

     

    Ideal Applications

    • Row Crop Irrigation: The variable track raingun trolley and broad nozzle range make the GT020B well suited for maize, sorghum, sunflower, and similar row crops where precise water placement and minimal soil compaction are priorities.
    • Pasture and Fodder Crop Watering: With hose lengths up to 250 m (820 ft) and high-throw ROYAL raingun configurations available, the GT020B can efficiently irrigate large expanses of pasture or fodder grass with minimal repositioning.
    • Vegetable and Horticultural Production: Smaller-diameter HYDRA nozzle configurations allow gentler, controlled application rates suitable for more sensitive vegetable crops where over-application or high-pressure impact must be avoided.
    • Cereal and Grain Crop Supplemental Irrigation: The Computer Aqua System enables consistent travel-speed management across long runs, supporting uniform supplemental irrigation for wheat, barley, and other cereal crops during critical growth stages.
    • Mixed Farming Operations: The availability of multiple hose diameters and both HYDRA and ROYAL raingun options within the same model platform allows a mixed farming enterprise to standardise on a single machine type while adapting it to different paddocks and seasonal requirements.
    • Large-Scale Field Agriculture: The hot-galvanised construction, PTO compatibility, and road-legal transport wheels make the GT020B a practical choice for large farms where the irrigator must move regularly between distant fields across varied terrain.
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    Irrigation Unit Conversions

    Convert a given value and unit to different unit type. Conversions are available for flow rate, area, distance, time, volume, pressure, power, precipitation, salinity, and speed.

    Click here to see unit descriptions.


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    Reference: Washington State University

    Product Features
    Picture Feature Title Feature Benefit
    Turbine Drive System Turbine Drive System Water-powered turbine flanged directly onto the gearbox with an external by-pass valve for precise flow control. Operates entirely on water pressure with no external power source required, making it highly practical for remote or off-grid field locations.
    Integrated Gearbox & PTO Integrated Gearbox & PTO Purpose-built gearbox paired with a power take-off unit to transfer drive from the turbine to the hose reel winding mechanism. Delivers consistent, reliable hose retrieval speed throughout the irrigation run, ensuring uniform water application across the full field length.
    Multiple Nozzle Options Multiple Nozzle Options Includes a full set of HYDRA raingun nozzles from Ø12 to Ø16 and ROYAL raingun nozzles from Ø16 to Ø22. Wide nozzle range allows the operator to precisely match output and throw radius to varying crop types, soil conditions, and water pressure — without purchasing additional accessories.
    Computer Aqua System Computer Aqua System Integrated Aqua System computer controller for automated management of the irrigation programme. Enables hands-free, programmable irrigation runs with precise control over timing and application rates, reducing labour demands and the risk of over- or under-watering.
    Hot Galvanized Construction Hot Galvanized Construction Chassis, turret, and reel are all constructed from hot-dip galvanized steel for full corrosion protection. Consistent zinc protection across all structural components significantly extends service life when operating in wet, muddy, or chemically treated field environments.
    Unadulterated PE Hose Unadulterated PE Hose Polyethylene hose manufactured exclusively from unadulterated raw material with no recycled content. Guarantees consistent wall thickness, pressure resistance, and long-term flexibility — reducing the risk of hose failure, kinking, or premature degradation in the field.
    Variable Track Wheels Variable Track Wheels Galvanized raingun trolley mounted on adjustable variable track wheels with 165/55 R14 4F tyres. Adjustable wheel track accommodates different row spacings and uneven terrain, keeping the raingun stable and correctly positioned throughout the irrigation run.
    Telescopic Stabilising Feet Telescopic Stabilising Feet Mechanically adjustable telescopic feet provide levelling and ground support for the main unit during operation. Ensures the machine remains stable and level on uneven or sloped ground, protecting internal components and maintaining consistent hose winding performance.
    Mechanical Lifting Device Mechanical Lifting Device Built-in mechanical lifting device on the trolley for raising and positioning the unit during field setup. Simplifies hitching, unhitching, and levelling without the need for additional lifting equipment, saving time during field moves.
    Flexible Connection Pipe Flexible Connection Pipe Flexible connection pipe linking the water supply inlet to the turbine and hose reel assembly. Absorbs movement and vibration between the water source connection and the machine, reducing stress on fittings and minimising the risk of leaks during operation.