Robuschi stands out as one of the main suppliers of vacuum solutions. Thanks to its liquid ring vacuum pump series, Robuschi offers a wide vacuum range, capable of achieving up to 33 mbar(a) while handling gas and vapors without lubricant contamination and ensuring nearly isothermal gas compression.
The Robuschi liquid ring pump portfolio includes two main configurations of the RVS series:
Up to 33 mbar(a)
Up to 600 m³/h
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Up to 33 mbar(a)
Up to 4,200 m3/h
Up to 2,000 mbar(g)
Up to 33 mbar(a)
From 400 to 4.200 m³/h
Up to 2,000 mbar(g)
Up to 33 mbar(a)
Up to 4,200 m³/h
Up to 2,000 mbar(g)
Up to 33 mbar(a)
Up to 4,200 m³/h
Up to 2,000 mbar(g)
Robuschi liquid ring pumps use a proven operating principle and robust construction. Depending on the system configuration, they can handle vacuum or gas-compression duties: the pump draws gas in, compresses it, and discharges it. The right setup depends on the required pressure and process conditions. These systems also offer low water consumption, low noise and vibration levels, and straightforward maintenance.
The range includes:
In these cases, it is necessary to feed the pump in a closed circuit and cool the liquid through the heat exchanger. This prevents contact between the cooling fluid and the liquid itself. The complete units with Robuschi vacuum pumps are the optimal solution in numerous industrial processes, even in critical applications, such as the discharge of wet gases or vapors. They also ensure negligible water consumption, low noise levels, reduced vibrations, and minimal maintenance.
Whether using monoblock or lantern pumps, or complete systems such as CRVS, LRVS, KVRS, or L‑SVT/L‑SVG, Robuschi offers high‑efficiency, low‑maintenance, and environmentally conscious vacuum solutions for numerous industrial processes.
A liquid ring pump uses a rotating sealing liquid and an impeller to move gas and create a vacuum. In the RVS series, the single-stage pump has an automatic discharge valve and a cylindrical element containing an eccentrically rotating impeller. Centrifugal force moves the service liquid, usually water, into a ring around the element. As the impeller rotates, the changing space between its blades and the liquid ring draws gas in through the front inlet. The pump then compresses the gas and discharges it through the outlet.
Liquid ring vacuum pumps require a clean sealing liquid, free of suspended solids, to support reliable operation. The liquid’s temperature also affects vacuum performance: warmer liquid can reduce the vacuum the pump can achieve, though the effect depends on the process and system design. Maintain an appropriate supply temperature, and use recirculation cooling where required. Liquid replenishment, recirculation, treatment, and discharge arrangements vary by system configuration and operating conditions.
Robuschi liquid ring vacuum pumps are available as RVS pumps, supplied bare-shaft or as complete groups such as CRVS and LRVS. These configurations serve a range of industrial applications. To select a suitable pump, consider the process gas, required capacity and pressure, operating conditions, and compatibility with the sealing liquid. They can be installed in the food and beverage industry for processes such as degassing, oil refining, concentration systems, and impurity removal. In the chemical and pharmaceutical sector, Robuschi vacuum pumps and groups are found in processes of distillation, degassing, drying, and solvent recovery. In the plastics industry, liquid ring vacuum pumps are installed in degassing processes.
Dairy, packaging, filling, preservation, conveying, drying, fermentation, and fluid handling.
Biogas, desalination, landfill gas recovery, vapor compression, and hydroexcavation.
Vacuum systems, conveying, lifting, cleaning, coating, drying, gas handling, and material movement.
Central vacuum systems, steam sterilization.
Methane gas extraction, ventilation.
Clean liquid handling, pulp handling, pulp drying, tissue.
Cooling and drying, extruder degassing, rubber degassing, dryers, granulate conveying.
Flue gas desulphurisation, bed combustion fluidization, condenser evacuation, sand oil fields recovery, recovery of cleaning liquids.
Coating, cooling, distillation, degassing, drying, gas compression, impregnation etc.
