To meet the demands of the process industry, Sterling SIHI offers completely dry running vacuum pumps. Dry running vacuum pumps are used increasingly throughout industry where there is a growing demand for uncontaminated vacuum, free from oil or service liquid, a requirement for low operating pressures, a flexibility required from batch processes, concern about storage and disposal costs of service liquids and the pressure to minimise life-cycle costs. The SIHIdry vacuum pump is a vertical twin-screw machine that is completely dry running and has no mechanical shaft seals. Moreover, the hermetically sealed unit has been developed specifically to meet these demands, whilst maintaining a simple, cost-effective solution.

for Chemical Applications:

  • SIHIDry M-Version
  • SIHIDry H-Version

for Industrial Applications:

  • SIHI Dry V-Version
  • SIHI Dry S-Version

Brochures:


DescriptionDetailsDocumentation

SIHIdry M-Version

The vacuum system SIHIdry M-version is based upon the dry running twin screw principle. The screw-shaped displacing bodies counter-rotate without contact. The pump inlet is at the top and the outlet at the geodetically lowest position (top-down pumping). In contrast to conventional pumps the both screw spindles are not mechanically but electronically synchronized. This innovative drive conception is the basis for a stepwise development of the vacuum pump to an intelligent vacuum system, which takes on additional functions as the valves, and pressure control for example. Furthermore, the intelligent system offers the possibility to exactly monitor the important process data in order to ensure a maximum of process safety.

Applications:

The vacuum system SIHIdry M-version has been developed for the use in areas with and without explosion hazard. These vacuum systems are used for example in drying processes, for reactor charging, for vacuum destillation, for inert gas blanketing, for product transfer, in general process vacuum, for central vacuum generation and many more.

Technical Data:

Suction capacity: up to 400 m³/h

Final pressure: < 0.001 mbar

DescriptionDetailsDocumentation

SIHIdry H-Version

The vacuum system SIHIdry H-version is based upon the dry running twin screw principle. The screw-shaped displacing bodies counter-rotate without contact. The pump inlet is at the top and the outlet at the geodetically lowest position (top-down pumping). In contrast to conventional pumps the both screw spindles are not mechanically but electronically synchronized. This innovative drive conception is the basis for a stepwise development of the vacuum pump to an intelligent vacuum system, which takes on additional functions as the valve-, and pressure control for example. Furthermore the intelligent system offers the possibility to exactly monitor the important process data in order to ensure a maximum of process safety.

Applications:

The vacuum system SIHIdry H-version has been developed for the use in areas with and without explosion hazard. These vacuum systems are used for example in drying processes, for reactor charging, for vacuum destillation, for inert gas blanketing, for product transfer, in general process vacuum, for central vacuum generation and many more.

Technical Data:

Suction capacity: up to 1,000 m³/h

Final pressure: < 0.01 mbar

DescriptionDetailsDocumentation

SIHIdry Two-stage Roots Systems

Series SIHIdry M-Version and H-Version with Roots Blower.

The SIHIdry two-stage roots system is based on a dry-running screw pump and a roots pump. The spreader rotates in the opposite direction without touching. The intake is on the upper side and the outlet is in the geodetically lowest possible position (top-down requirement). This innovative drive concept is the basis for a gradual upgrading to an intelligent vacuum system that takes over additional functions such as valve and pressure control. The intelligent system also provides the option of specific monitoring of important process data in order to guarantee maximum process stability.

Applications:
The SIHIdry two-stage roots system has been developed for use in explosive surroundings. The modular system can be flexibly adapted for different processes, such as drying, thin-film vaporisation, etc.

Technical Data:

Suction capacity: up to 4,000 m³/h

Final pressure: < 0.001 mbar

N/A. Please contact us for more information

DescriptionDetailsDocumentation

SIHIdry V-Version

The vacuum system SIHIdry V-Version has been especially developed for use in industrial applications. It is based upon a dry running twin screw principle, which is without any lubricants, sealants or operating liquids. Wide clearances in the pumping chamber make the pump robust when it comes to the handling of particles and liquids. It is supported by top-down pumping (inlet at the top and the outlet at the lowest point in the pumping chamber) and the pump chamber has been designed to eliminate dead space.

Applications:

The vacuum system SIHIdry V-Version has been developed for the use in areas without explosion hazard. These vacuum systems are used for example in sterilisation processes, for freeze-drying, for gas removal, in crystal pulling systems, for metallurgy furnaces, for product transfer, for central vacuum generation and many more.

Technical Data:

Suction capacity: up to 400 m³/h

Final pressure: < 0.001 mbar

N/A. Please contact us for more information.

DescriptionDetailsDocumentation

SIHIdry S-Version

The vacuum system SIHIdry S-Version has been especially developed for use in industrial applications. It is based upon a dry running twin screw principle, which is without any lubricants, sealants or operating liquids. Wide clearances in the pumping chamber make the pump robust when it comes to the handling of particles and liquids. It is supported by top-down pumping (inlet at the top and the outlet at the lowest point in the pumping chamber) and the pump chamber has been designed to eliminate dead space.

Applications:

The vacuum system SIHIdry S-Version has been developed for the use in areas without explosion hazard. These vacuum systems are used for example in sterilisation processes, for freeze-drying, for gas removal, in crystal pulling systems, for metallurgy furnaces, for product transfer, for central vacuum generation and many more.

Technical Data:

Suction capacity: up to 1,000 m³/h

Final pressure: < 0.01 mbar

N/A. Please contact us for more information.

DescriptionDetailsDocumentation

SIHIdry Two-stage Roots Systems

Series SIHIdry S-Version and V-Version with Roots Blower.

The SIHIdry two-stage roots system is based on a dry-running screw pump and a roots pump. The spreader rotates in the opposite direction without touching. The intake is on the upper side and the outlet is in the geodetically lowest possible position (top-down requirement). This innovative drive concept is the basis for a gradual upgrading to an intelligent vacuum system that takes over additional functions such as valve and pressure control. The intelligent system also provides the option of specific monitoring of important process data in order to guarantee maximum process stability.

Applications:
The SIHIdry two-stage roots system has been developed for use in non explosive surroundings. The modular system can be flexibly adapted for different processes, such as vacuum locks, coating processes, etc.

Technical Data:

Suction capacity: up to 4,000 m³/h

Final pressure: < 0.001 mbar

N/A. Please contact us for more information.