Aliva-237 concrete sprayer

The Aliva 237 is a compact rotor machine for dry-mix spraying of concrete, developed for repair work and smaller spraying jobs. With an output from 0.2 to 4 m³/h, depending on the rotor size selected, it covers everything from joint sealing and small repairs to larger repair areas. The machine has automatic lubrication of the sealing gaskets and an integrated frequency converter that gives infinitely variable control of the rotor speed. The emergency stop also cuts the air supply. The Aliva 237 is supplied with electric or pneumatic drive, and remote control is available as an option.

The manufacturer's data sheet for concrete repair describes the machine with a 0.6 litre S rotor and an output of 0.2–0.45 m³/h, an electric motor for 3 x 380–480 V / 50–60 Hz (air drive on request), infinitely variable speed control and a Ø 38 mm outlet. The machine measures 1230 x 750 x 1117 mm (L×W×H), weighs 450 kg and has a 68 litre hopper with a feed height of 1117 mm. The conveying distance is 40 m, which can be extended to 100 m with steel pipes. For this kit, the manufacturer recommends a compressor of 3 m³/min (105 cfm).

The machine handles bagged repair concrete and mortar (oven-dried or dry) and dry or earth-moist site mixes with an aggregate size of up to 4 mm; the material may contain a certain proportion of fibre. Together with the Aliva Converto spray nozzle and the 0.6 litre Repro rotor, the machine is suitable for very small outputs, such as concrete rehabilitation and joint sealing. The manufacturer highlights that the machines are small and can be moved quickly, are easy to handle, clean and maintain, and that oven-dried mix provides round-the-clock availability.