150–3750L/S Industrial Vacuum Pump Direct Discharge Roots Vacuum Pump
| Product Type: | Direct Discharge Roots Vacuum Pump | Model Series: | LQ Series |
| Pumping Speed: | 150–3,750 L/s | Motor Power: | 2.2–250 KW (Depending On Model) |
| Rotational Speed: | 990–2,900 Rpm (Depending On Model) | Discharge Type: | Direct To Atmosphere |
| Backing Pump: | Not Required For Suitable Configurations | Exhaust Diameter: | 2 × Φ63–Φ160 Mm (Depending On Model) |
| Other service: | OEM, ODM & Customization Available | ||
| High Light: | Direct Discharge Roots Vacuum Pump,150L/S Industrial Vacuum Pump,3750L/S Industrial Vacuum Pump |
||
Direct Discharge Roots Vacuum Pump With 150 To 3,750 L/S Factory-Direct Manufacturing
1. Product Overview
The AIRIPA LQ Series Direct Discharge Roots Vacuum Pump is designed for industrial vacuum applications requiring high pumping capacity and direct exhaust to atmospheric pressure. Unlike conventional Roots vacuum boosters that typically require backing pumps, this series is designed to discharge directly to the atmosphere under specified operating conditions.
The supplied series data covers seven product configurations, with listed pumping speeds from 150 to 3,750 L/s. Its robust construction, stable gas-handling capability and flexible installation make it suitable for industrial vacuum coating, chemical processing, vacuum drying and material handling.
AIRIPA provides factory-direct manufacturing, technical consultation and OEM/ODM support for industrial vacuum equipment projects.

2. Key Features & Benefits
Direct Atmospheric Discharge
Designed to exhaust directly to atmospheric pressure, reducing the need for a separate backing vacuum pump in suitable applications.
High Pumping Capacity
Listed pumping speeds from 150 to 3,750 L/s accommodate different industrial vacuum system requirements.
Stable Vacuum Operation
The Roots rotor mechanism provides continuous gas transfer and supports stable operation within the specified working range.
Robust Industrial Construction
A reinforced mechanical structure supports durability and reliable performance in demanding industrial environments.
Flexible System Integration
Direct atmospheric discharge can simplify vacuum system layouts and reduce installation complexity.
Efficient Gas Handling
The rotary pumping mechanism supports continuous gas movement for suitable vacuum processing applications.
Adaptable Operating Configurations
Multiple models and motor power configurations allow selection according to process and equipment requirements.
Factory-Direct Technical Support
AIRIPA provides model selection assistance and OEM/ODM services for industrial vacuum equipment manufacturers.
3. Working Principle
The LQ Series uses synchronized Roots rotors rotating in opposite directions to transport gas from the inlet toward the exhaust. The non-contacting rotor mechanism provides continuous gas transfer within the pumping chamber.
Unlike conventional Roots vacuum boosters, the LQ Series is designed for direct discharge to atmospheric pressure, allowing suitable systems to operate without a separate backing vacuum pump. Actual operating capability depends on the selected model, gas load, pressure conditions and equipment configuration.
4. Technical Specifications
LQ Series Direct Discharge Roots Vacuum Pump Parameters
| Model | Pumping Speed (L/s) | Ultimate Pressure (Pa) | Ultimate Pressure (Torr) | Rotational Speed (rpm) | Motor Power (kW) | Inlet Diameter (mm) | Exhaust Diameter (mm) | Dimensions L × W × H (mm) |
|---|---|---|---|---|---|---|---|---|
| LQ-150A | 150 | – | 1.6 × 10⁻⁹ | 2900 | 2.2–15 | 100 | 2 × Φ63 | 710 × 420 × 385 |
| LQ-300 | 300 | – | 1490 | 1490 | 4–30 | 160 | 2 × Φ100 | 925 × 550 × 470 |
| ZJ-600B | 600 | – | 1490 | 1490 | 7.5–7.5 | 200 | 2 × Φ100 | 1170 × 670 × 600 |
| LQ-1200B | 1200 | 5 × 10⁻¹ | 1.3 × 10⁻⁹ | 1490 | 11–132 | 250 | 2 × Φ160 | 1360 × 900 × 750 |
| LQ-2500 | 1800 | – | 1490 | 1490 | 15–185 | 320 | 2 × Φ160 | 1610 × 900 × 750 |
| LQ-1200B | 2500 | – | 990 | 990 | 185–250 | 400 | 2 × Φ160 | 1920 × 1180 × 1060 |
| LQ-2500 | 3750 | – | 1490 | 1490 | 30–250 | 400 | 2 × Φ160 | 1920 × 1180 × 1060 |
Note: Product models, technical specifications, and configurations are subject to ongoing updates and improvements. For the latest product information, detailed specifications, and model availability, please contact AIRIPA's professional customer service team for confirmation.
5. Industrial Applications
Vacuum Coating
Supports suitable industrial vacuum coating and deposition equipment requiring continuous gas removal.
Chemical Processing
Can be integrated into compatible chemical processing, vacuum drying and gas-handling systems.
Vacuum Drying & Material Handling
Provides pumping capacity for selected vacuum drying, conveying and material transfer applications.
Environmental & Wastewater Processing
Can support suitable vacuum-assisted environmental treatment and wastewater processing equipment.
Large Industrial Vacuum Systems
Designed for applications requiring high gas-handling capacity and simplified vacuum system configurations.
Application suitability depends on process gas characteristics, working pressure, temperature and the selected pump configuration.
Why Choose AIRIPA as Your Vacuum Pump Manufacturer?
Direct Factory Supply
AIRIPA operates its own manufacturing workshops and assembly facilities, supporting factory-direct supply and efficient project communication.
Engineering Support
Our technical team assists with vacuum pump selection, operating requirements and equipment integration.
Assembly & Quality Testing
In-house assembly and factory testing processes support product verification and manufacturing quality control.
OEM & ODM Services
AIRIPA supports OEM, ODM and private labeling requirements for industrial equipment manufacturers, distributors and system integrators.
6. Frequently Asked Questions
Q1. What is a direct discharge Roots vacuum pump?
A direct discharge Roots vacuum pump is designed to exhaust gas directly to atmospheric pressure under specified operating conditions, unlike conventional Roots boosters that normally require backing pumps.
Q2. Does the AIRIPA LQ Series require a backing vacuum pump?
The LQ Series is designed for direct atmospheric discharge, so a separate backing vacuum pump may not be required in suitable configurations. Actual system requirements should be confirmed for the selected model and application.
Q3. What pumping speeds are available in the LQ Series?
The supplied technical data lists pumping speeds from 150 to 3,750 L/s across seven configurations.
Q4. What industries can use direct discharge Roots vacuum pumps?
Potential applications include vacuum coating, chemical processing, vacuum drying, material handling and compatible industrial vacuum systems.
Q5. How do I select the correct LQ Roots vacuum pump?
Selection depends on the required pumping speed, operating pressure, gas characteristics, motor configuration and installation conditions. AIRIPA can assist with technical evaluation.
Q6. Does AIRIPA offer OEM and ODM services?
Yes. AIRIPA supports OEM, ODM and private labeling projects for industrial vacuum equipment manufacturers and distributors.

7. Model Selection & Request a Quote
Find the Right LQ Roots Vacuum Pump
AIRIPA offers direct discharge Roots vacuum pump configurations with listed pumping speeds from 150 to 3,750 L/s to meet different industrial requirements.
Get a Factory-Direct Quote
Looking for a reliable Roots vacuum pump manufacturer?
AIRIPA provides factory-direct supply, technical support and OEM/ODM services. Share your required pumping speed, operating pressure and application details to receive a suitable recommendation and quotation.
Contact AIRIPA Today for Technical Support & a Customized Quote.