ALG–ALGB Series Dry Screw Vacuum Pump With Oil Free Pumping Chambers Water Cooling System
| Product Type: | Oil-Free Dry Screw Vacuum Pump | Model Series: | ALG–ALGB Series (10 Models) |
| Pumping Speed: | 50–360 L/s (180–1,300 M³/h), Depending On Model | Ultimate Pressure: | 5 / 1 Pa (Subject To Operating Conditions) |
| Motor Power: | 4–30 KW (Variable Speed), Depending On Model | Cooling System: | Water Cooled |
| Other service: | OEM, ODM & Customization Available | Cooling Water Flow: | 12–25 L/min, Depending On Model |
| Operating Temperature: | 5–40°C | ||
| High Light: | ISO 9001 Dry Screw Vacuum Pump,Dry Screw Vacuum Pump Oil Free,Water Cooled Vacuum Pump |
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ALG–ALGB Series Dry Screw Vacuum Pumps With Oil-free Pumping Chambers Water Cooling System
1. Product Overview
The AIRIPA ALG–ALGB Series Dry Screw Vacuum Pump is an industrial oil-free vacuum pumping solution designed for clean gas handling and demanding vacuum processes. Its non-contacting twin-screw mechanism operates without oil inside the pumping chamber, helping reduce the risk of oil contamination in the process gas.
The series includes 10 models, with nominal pumping speeds from 50 to 360 L/s and manufacturer-listed capacities of 180–1,300 m³/h. It combines water cooling, shaft sealing, purge provisions and intelligent monitoring to support industrial vacuum system integration.
With configurations for both fixed-speed and variable-speed operation, the ALG–ALGB series can be evaluated for vacuum coating, chemical processing, semiconductor-related equipment and other industrial applications.
2. Key Features & Benefits
Oil-Free Pumping Chamber
Non-contacting screw rotors provide dry gas handling without oil in the pumping chamber, helping minimize process contamination.
Twin-Screw Pumping Technology
Synchronized screw rotors transport gas continuously from inlet to exhaust without rotor-to-rotor contact.
Water-Cooled Design
Water cooling helps manage operating temperatures, with model-specific cooling water requirements.
Intelligent Monitoring
The control system supports temperature monitoring, cooling water management, operating pressure display and fault alarms.
Purge and Sealing Protection
Purge provisions, labyrinth-type sealing and shaft sealing help protect critical components. Process compatibility depends on the selected configuration.
Automatic Cleaning Functions
The documented control system supports configurable cleaning and purge sequences to assist routine operation and maintenance.
Low-Noise Operation
The series has specified noise levels below 76–80 dBA for fixed-speed configurations, depending on model, with lower listed limits for variable-speed configurations.
Flexible Motor Configurations
Fixed-speed and variable-speed motor options provide different operating configurations, depending on model availability.
3. Working Principle
The ALG–ALGB dry screw vacuum pump uses two synchronized, non-contacting screw rotors rotating in opposite directions. Gas enters the inlet, is transported through the pumping chamber and discharged through the exhaust. The pumping chamber operates without oil, while the cooling, sealing and purge systems help manage operating temperature and protect internal components.
4. Technical Specifications
ALG–ALGB Series Model Comparison
| Parameter | ALGB50 | ALGB70 | ALGB90 | ALGB110 | ALGB150 | ALGB180 | ALGB220 | ALG260 | ALG300 | ALGB360 |
|---|---|---|---|---|---|---|---|---|---|---|
| Pumping Speed (L/s) | 50 | 70 | 90 | 110 | 150 | 180 | 220 | 260 | 300 | 360 |
| Pumping Speed (m³/h) | 180 | 250 | 300 | 400 | 540 | 650 | 790 | 950 | 1080 | 1300 |
| Ultimate Pressure (Pa) | 5/1* | 5/1* | 5/1* | 5/1* | 5/1* | 5/1* | 5/1* | 5/1* | 5/1* | 5/1* |
| Max. Exhaust Pressure (bar) | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Fixed-Speed Motor Power (kW) | 5.5 | 7.5 | 11 | 11 | 15 | 18.5 | 22 | — | — | — |
| Variable-Speed Motor Power (kW) | 4 | 5.5 | 7.5 | 7.5 | 11 | 15 | 15 | 22 | 30 | 30 |
| Rotational Speed (rpm) | 2940 | 2940 | 2940 | 2940 | 2940 | 2940 | 2940 | 2940 | 2940 | 2940 |
| Inlet Diameter (mm) | 80 | 80 | 80 | 100 | 100 | 100 | 100 | 150 | 150 | 150 |
| Exhaust Diameter (mm) | 65 | 65 | 80 | 80 | 80 | 80 | 80 | 120 | 120 | 120 |
| Inlet Lubricating Oil (L) | 0.8 | 0.8 | 1.3 | 1.3 | 1.3 | 1.5 | 1.5 | 1.7 | 1.7 | 1.7 |
| Exhaust Lubricating Oil (L) | 1.2 | 1.2 | 1.8 | 1.8 | 1.8 | 1.8 | 3.4 | 3.4 | 3.4 | 3.4 |
| Cooling Water Flow (L/min) | 12 | 12 | 15 | 15 | 15 | 18 | 18 | 20 | 25 | 25 |
| Cooling Water Pressure (MPa) | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 | 0.2–0.35 |
| Cooling Water Outlet Temp. (°C) | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 |
| Cooling Water Connection | G1/2" | G1/2" | G1/2" | G1/2" | G1/2" | G1/2" | G1/2" | G1/2" | G1/2" | G1/2" |
| Max. Inlet Gas Temp. (°C) | ≤50 | ≤50 | ≤50 | ≤50 | ≤50 | ≤50 | ≤50 | ≤50 | ≤50 | ≤50 |
| Max. Exhaust Gas Temp. (°C) | 140 | 140 | 150 | 150 | 150 | 180 | 180 | 220 | 220 | 250 |
| Lubricating Oil Temp. (°C) | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
| Operating Ambient Temp. (°C) | 5–40 | 5–40 | 5–40 | 5–40 | 5–40 | 5–40 | 5–40 | 5–40 | 5–40 | 5–40 |
| Fixed-Speed Noise (dBA) | ＜76 | ＜76 | ＜76 | ＜76 | ＜78 | ＜78 | ＜78 | ＜80 | ＜80 | ＜80 |
| Variable-Speed Noise (dBA) | ＜70 | ＜70 | ＜70 | ＜70 | ＜72 | ＜72 | ＜72 | ＜74 | ＜74 | ≤74 |
Common Sealing Configuration: Labyrinth-type sealing with lubricating oil isolation and shaft sealing, as specified in the supplied product documentation.
Technical Notes:
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The original ultimate pressure specification is listed as 5/1 Pa. The corresponding operating or test conditions must be confirmed before publication.
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Pumping speeds in L/s and m³/h follow the manufacturer's original specification table.
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A dash indicates that no fixed-speed motor power is specified for that model.
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Motor and control configurations should be verified for the selected model.
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Oil quantities refer to lubrication systems and do not indicate oil injection into the pumping chamber.
5. Industrial Applications
The ALG–ALGB series can be evaluated for:
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Vacuum Coating: Vacuum support for compatible PVD, CVD and coating processes.
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Chemical Processing: Dry vacuum generation for suitable distillation, drying and solvent-handling systems.
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Semiconductor Manufacturing: Vacuum pumping for compatible process equipment requiring oil-free pumping chambers.
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Industrial Vacuum Drying: Gas removal for appropriately designed drying and processing systems.
Process suitability depends on gas chemistry, operating temperature, condensable vapor content, particulates and the selected sealing or purge configuration.
Why Choose AIRIPA as Your Vacuum Pump Manufacturer?
Direct Factory Manufacturing
AIRIPA operates its own manufacturing workshops and assembly lines, supporting factory-direct supply and technical communication.
Vacuum Engineering Expertise
Our engineering team focuses on industrial vacuum technology, product development and equipment optimization.
In-House Assembly & Testing
Dedicated assembly facilities and factory testing equipment support production oversight and product verification.
OEM, ODM & Private Labeling
AIRIPA supports equipment manufacturers and distributors with OEM, ODM and private labeling services, subject to project requirements.
7. ALG–ALGB Series Selection & Request a Quote
Model Selection
ALGB50–ALGB110: 50–110 L/s
Models for applications requiring the lower pumping capacities within the series, with 80–100 mm inlet connections.
ALGB150–ALGB220: 150–220 L/s
Intermediate-capacity models offering higher nominal pumping speeds and 100 mm inlet connections.
ALG260, ALG300 & ALGB360: 260–360 L/s
Higher-capacity models with 150 mm inlet connections for industrial vacuum systems requiring greater nominal gas-handling capacity.
Request a Factory-Direct Quote
For accurate model selection, please provide the required operating pressure, process gas composition, pumping capacity, cooling water conditions, electrical requirements and preferred motor configuration.
Contact AIRIPA for ALG–ALGB technical consultation, model selection and OEM/ODM quotations.
8. Frequently Asked Questions
Q1. Is the ALG–ALGB series completely oil-free?
The pumping chamber operates without oil. However, lubricating oil is used in designated mechanical components, so the equipment should be described as having an oil-free pumping chamber rather than being entirely oil-free.
Q2. What pumping speeds are available?
The series includes 10 models with nominal pumping speeds from 50 to 360 L/s, corresponding to manufacturer-listed values of 180–1,300 m³/h.
Q3. Does the ALG–ALGB series require cooling water?
Yes. The specified cooling water flow ranges from 12 to 25 L/min, depending on the model, with a listed supply pressure of 0.2–0.35 MPa.
Q4. Can these pumps handle corrosive or condensable process gases?
Suitability depends on the gas composition, concentration, temperature, sealing materials, protective coatings and purge configuration. AIRIPA should review the process conditions before confirming compatibility.
Q5. Are fixed-speed and variable-speed versions available?
The supplied technical data includes fixed-speed and variable-speed motor specifications. Available configurations differ by model and should be confirmed during selection.
Q6. Does AIRIPA offer OEM and ODM services?
Yes. AIRIPA supports OEM, ODM and private labeling discussions for industrial equipment manufacturers, distributors and vacuum system integrators.
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