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Roots Pumps

Product catalog summary

Introduction
The document provides an overview of the OktaLine series of Roots pumps, designed for low and medium vacuum applications. These pumps are customizable, offering various pumping speeds and versions, and require a suitable backing pump. They are noted for high compression values, low operating costs, and high uptime.

Customer Benefits

Wide range of pumping speeds from 145 to 27,400 m³/h.
Robust, compact design for long life.
High compression ratio and overflow valve for short pumpdown time.
Maintenance-free with optional magnetic coupling.
Low operating costs due to air cooling.
Available in stainless steel upon request.

Series Overview

Convection-cooled – OktaLine
Gas-circulation-cooled – OktaLine G
Explosion-protected – OktaLine ATEX
Magnetic coupling option available for all models.

Applications

Glass and foil coating
Plasma etching
PVD and CVD processes
Vacuum metallurgy
Space simulation
Vacuum drying and freeze drying
Steel degassing and secondary metallurgy
Electron beam welding

Technical Specifications
Detailed technical data, dimensions, and order numbers for models such as Okta 250 to Okta 18000 are provided. Information includes flange sizes, operating fluid requirements, differential pressure, rotation speeds, sound pressure levels, weight, cooling methods, leak rates, motor protection, and power requirements.

Conclusion
The OktaLine series offers flexibility and efficiency for industrial and research applications, with options for magnetic coupling and explosion protection, minimizing maintenance and operational costs.

Specifications
Detailed specifications for Okta pump models include flange sizes, operating fluid types, rotation speeds, sound pressure levels, weights, cooling methods, leak rates, motor protection, and nominal pumping speeds. Protection category is IP 55, and ambient temperature range is 5-40 °C.

Procedures and Recommendations
Additional equipment and motor voltages are available upon request. For higher speeds or pressure differentials, contact Pfeiffer Vacuum sales. The document emphasizes flexibility and process adaptation due to motor power and frequency converter design.

Norms and Standards
References EN ISO 2151 for emission sound pressure levels and mentions ATEX certification for explosion protection in certain models, complying with directive 94/9/EC (ATEX 95) for temperature class T3.

Customer Benefits
The OktaLine series offers a wide range of pumping speeds, high pressure differences, and flexibility in process adaptation. Gas-circulation-cooled Roots pumps provide high differential pressures with lower power consumption and can operate without backing pumps. Explosion-protected OktaLine ATEX models offer reliable construction and flexible application.

Applications
Suitable for electron beam welding, vacuum furnaces, plasma research, particle accelerators, space simulation, chemical and process technology, heat treatment, vacuum drying, and biotechnology.

Technical Data and Dimensions
Includes detailed technical data and dimensions for each pump model, including flange sizes, operating fluid filling, rotation speeds, ultimate pressure, weight, cooling methods, motor ratings, and noise levels. Graphs illustrate pumping speeds at different rotation speeds and pressures.

Overview
Technical specifications for the Okta ATEX series of explosion-protected pumps, designed for hazardous environments, equipped with motors and magnetic couplings, and featuring blocked overflow-valves.

Specifications

Equipment Category: Categories 2G and 3G according to ATEX directive 94/9/EC.
Operating Fluid: Type P3 with varying filling capacities.
Rotation Speed: 1500 to 3600 min-1, nominal speeds of 3000 min-1 at 50 Hz and 3600 min-1 at 60 Hz.
Sound Pressure Level: 70 dB(A) to 79 dB(A) depending on intake pressure.
Weight: 154 kg to 700 kg depending on the model.
Cooling Method: Standard air cooling.
Leak Rate: 1 · 10-6 Pa m3/s.
Motor Protection: 3TF.
Rated Power: 1.5 kW to 11 kW at 50 Hz and 1.8 kW to 13 kW at 60 Hz.
Nominal Pumping Speed: 280-670 m3/h to 2160-5190 m3/h.
Mains Requirement: Voltage of 230/400 V at 50 Hz and 265/460 V at 60 Hz.
Protection Category: IP 55.
Ambient Temperature: 5-40 °C.

Additional Information

Flange sizes vary by model, with options for DN 100 PN 16 to DN 250 PN 16.
Order numbers are provided for different configurations and categories.
Additional equipment and motor voltages are available upon request.

Company Information
Pfeiffer Vacuum GmbH offers a complete range of vacuum solutions, focusing on innovation, technological perfection, and reliable service, with comprehensive training and support for plant layout and on-site service worldwide.

Catalog excerpts

ROOTS PUMPS For all low and medium vacuum applications

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ROOTS PUMPS

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Introduction Roots pumps. . . . . . . . . . . . . . . . . . . . . . . . . 4 Overview / Applications Convection-cooled – OktaLine . . . . . . . . . . . . . . . . . . . . . Function and description. . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pumping speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical data / Order numbers / Accessories . . . . . . . . . Gas-circulation-cooled – OktaLine G. . . . . . . . . . . . . . . . . Function and description. . . . . . . . . . . . . . . . ....

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ROOTS PUMPS

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For all low and medium vacuum applications The OktaLine series Roots pumps can be perfectly tailored to customer-specific requirements by different pumping speeds and versions. This type of pump needs a backing pump both suited to the application and designed for the gas stream. The high-precision production technology makes it possible to achieve very high compression values, which in turn allows for maximum pumping speed at very low gas exit temperatures. Pfeiffer Vacuum Roots pumps offer low operating costs at high uptime, since electrical power and (depending on the process) a gaseous purge...

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Gas-circulation-cooled - OktaLine G Okta 500 G Okta 1500 G Okta 4000 G Okta 8000 G Explosion-protected -Okta 500 ATEX Okta 1000 ATEX Okta 2000 ATEX Okta 4000 ATEX OktaLine ATEX

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Convection-cooled – OktaLine Gas-circulation-cooled – OktaLine G Explosion-protected – OktaLine ATEX (in accordance with Directive 94/9/EC) Magnetic coupling as an option of all models The integrated overflow valve is standard in all convectioncooled pumps. This makes it possible to switch the pump on at atmospheric pressure. The pump is thus automatically protected from thermal overload. The gain in additional pumping speed allow for shorter cycle times in load lock applications and time-critical processes. Monitoring with fault-prone pressure switches and slow start up with cost-intensive frequency...

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Convection-cooled OktaLine Roots pumps for all low and medium vacuum applications Customer benefits The pumping speeds of convection-cooled Roots pumps range from 145 to 27,400 m3/ h . They can easily be combined and used in low and medium vacuum applications . Typical uses include industrial applications, coating, the semiconductor industry and research and development, or in chemical and process technology applications . The gear box and bearings in our Roots pumps are separated from the gas pumping chamber. The contactless operating principle of the Roots pistons allows for technically dry operations A...

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Applications ■ Metallurgy Simulation chambers Packaging industry Freeze/vacuum-drying Thin-film technology Electron beam welding Load-locks Chemistry and process technology Industrial leak detection systems Steel degassing

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standard without motor DN 1 DN 63 ISO-F DN 63 ISO-F DN 63 ISO-F DN 2 DN 63 ISO-F DN 63 ISO-F DN 63 ISO-F standard without motor DN 1 DN 100 ISO-F DN 100 ISO-F DN 100 ISO-F DN 2 DN 100 ISO-F DN 100 ISO-F DN 100 ISO-F

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standard without motor 1000 M standard without motor 2000 M standard without motor 4000 M

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standard without motor 6000 M Okta 8000 Okta 8000 standard without motor

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Pumping speed Okta 250 Okta 250, rotation speed 3000 min-1 Okta 500, rotation speed 3000 min-1 Okta 1000, rotation speed 3000 min-1 Okta 6000, rotation speed 3000 min-1 Okta 8000, rotation speed 1500 min-1 Okta 4000, rotation speed 3000 min-1 Okta 2000, rotation speed 3000 min-1 Okta 18000, rotation speed 1500 min-1

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Technical data DN 63 ISO-F DN 100 ISO-F DN 63 ISO-F DN 100 ISO-F Operating fluid11 Operating fluid filling Differential pressure at the overflow valve21 Rotation speed max. Rotation speed min . Emission sound pressure level (EN ISO 2151) at intake pressure10 hPa Emission sound pressure level (EN ISO 2151) at intake pressure1 hPa Weight: with motor Weight: without motor Weight: with magnet coupling Cooling method, standard Leak rate: standard Leak rate: with magnet coupling Motor protection Nominal rotation speed at 50 Hz Nominal rotation speed at 60 Hz Rated power 50 Hz Rated power 60 Hz Nominal...

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High differential pressures with lower power consumption High pressure ranges and maximum differential pressures, in continuous operation up to 870 hPa, are ideal operating conditions for gas-circulation-cooled Roots pumps in the OktaLine G series. At various power ratings from 5.5 kW up to a nominal rating of 200 kW, a pumping speed of 210 to 12,000 m3/h can be achieved. Gas-circulation-cooled Roots pumps can be operated without backing pumps. Thanks to the frequency converter, energy use can be significantly reduced. Pumping speeds can be precisely adjusted. Gascirculation-cooled Roots pumps...

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Applications ■ Electron beam welding Vacuum furnaces Plasma research Particle accelerators Space simulation Chemical and process technology

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100 Okta 4000 G, rotation speed 1500 min-1 100 Okta 8000 G, rotation speed 1500 min-1

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Technical data Flange (out) Flange (in) Operating fluid11 Operating fluid filling Rotation speed Rotation speed max. Rotation speed min . Ultimate pressure without gas ballast Weight: without motor Cooling method, standard Cooling gas connection Leak rate Motor rating Nominal rotation speed at 50 Hz Nominal rotation speed at 60 Hz Nominal pumping speed Nominal pumping speed at 50 Hz Nominal pumping speed at 60 Hz Noise level with connected exhaust line Protection category Sealing gas Ambient temperature Splinter shield fur Okta G PP 030 149 AX PP 031 114 -X 11 Additional equipment and motor...

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Magnetic coupled Roots pumps with ATEX certification for low and medium vacuum application. For processes that take place in explosive environments or for evacuating explosive gases we have developed ATEX certified pumps in accordance with directive 94/9/EC (ATEX 95), which meet the high requirements for explosion protection . Our Roots pumps offer pumping speeds ranging from 280 to 5,190 m3/h . Depending on the application, you can choose between equipment category 2G or 3G . All pumps are suitable for temperature class T3 . The gear box and bearing area in our Roots pumps are separated from...

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