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Salvatore

VSB Bare Shaft Liquid Ring Vacuum Pump

Large single-stage liquid ring vacuum pump from Salvatore Robuschi, Italy, supplied bare shaft or on a baseplate with coupling. Reaches vacuum down to 33 mbar abs with dry air capacities from 240 to 1,650 m³/h, for motor powers from 15 to 45 kW.

Key Features

  • Vacuum down to 33 mbar abs
  • Dry air capacity from 240 to 1,650 m³/h at 50 Hz
  • Supplied bare shaft or on baseplate with standard coupling
  • For motor powers from 15 to 45 kW
  • Double-end shaft support for enhanced stability
  • Grease-lubricated bearings with protective lip seals
  • Single service liquid inlet with optimized flow rates
  • Ductile iron or AISI 316 stainless steel distribution plate
  • EN 1092-1 PN10 flanges
  • ATEX version available
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Category: Vacuum Pump

Product Description

This bare shaft liquid ring vacuum pump from Salvatore Robuschi covers the largest sizes of the series. It is a single-stage pump with exhaust valves, supplied either as a bare shaft pump or mounted on a baseplate with a standard coupling, for motor powers above 11 kW. It reaches vacuum levels down to 33 mbar abs and handles dry air capacities from 240 to 1,650 m³/h at 50 Hz.

The shaft is supported at both ends for enhanced stability, and the grease-lubricated bearings are protected by lip seals. A single service liquid inlet with optimized flow rates supports efficient operation.

The pump is available with a cast iron or AISI 316 stainless steel casing, a ductile iron or AISI 316 distribution plate, and PTFE valves. Suction and discharge flanges follow EN 1092-1 PN10. ATEX versions are available for potentially explosive atmospheres.

Liquid ring vacuum pumps are commonly used for vacuum drying, degassing, filtration, distillation, and evaporation in the chemical, pharmaceutical, plastics, and paper industries.

Technical Specifications

Pump Type Single-stage liquid ring vacuum pump with exhaust valves
Configuration Bare shaft
On baseplate with standard coupling
Minimum Suction Pressure 33 mbar abs
Maximum Discharge Pressure 1,100 mbar abs
Max Gas Suction Temperature 100°C
Max Service Liquid Temperature 70°C
Capacity Basis Dry air at 20°C, 50 Hz
Size 100-22 15 kW motor, 1,450 rpm, 240 to 600 m³/h
Size 100-30 22 kW motor, 1,450 rpm, 430 to 810 m³/h
Size 125-26 30 kW motor, 980 rpm, 503 to 1,130 m³/h
Size 125-40 45 kW motor, 980 rpm, 900 to 1,650 m³/h
Connections DN 100 flanged (sizes 100-22, 100-30)
DN 125 flanged (sizes 125-26, 125-40)
Flange Standard EN 1092-1 PN10
Service Liquid Inlet G 1" (sizes 100-22, 100-30)
G 1 1/2" (sizes 125-26, 125-40)
Casing and Manifold Material Cast iron GJL 250
Stainless steel AISI 316 (CF8M)
Distribution Plate Ductile iron GJS 400
Stainless steel AISI 316 (CF8M)
Impeller Material Stainless steel AISI 420 (CA40)
Stainless steel AISI 316 (CF8M)
Shaft Material AISI 420
AISI 316
Valves PTFE
Shaft Seal Single mechanical seal
ATEX Version Available

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