2LM720H57 7.5kw double stage ring blower air vacuum pump

2LM720H57 7.5kw double stage ring blower air vacuum pump 

1. Technical Paramater

Phase: 3

Motor: 10.0 HP @ 50Hz / 11.5 HP @ 60Hz

Motor: 7.5 KW @ 50Hz / 8.6 KW @ 60Hz

Current: 14.3A @ 50Hz / 16.7A @ 60Hz

Air Flow: 320/380m³/h  (188/224cfm)

Max Pressure: 610/670mbar  (245" /269" H2O)

Max Vacuum: -420/-440mbar  (-169" /-177" H2O)

Sound Level: 73/76 db

Inlet Diameter: G2"

Weight: 73kg  (161lbs)

2. Other main model

We have many other model for you choose, if you want, please contact with me ,so we can send catalog to you. 

3. Performance curves:

4. Dimensions:

Size( L*W*H ): 571*627*410mm,  Inlet and outlet diameter: G2".

5. Features:

• Beautiful surface,Easy installation,Low noise level 
• No vibration, and therefore complete dynamic stability
• Pulsation-free discharge,free maintenance 
• Higher pressure ratio,100% oil free 
• High temperature-resistant bearings with longer grease life  
• Suitable for environmental protection
• Wide frequency motor with IP54,CALSS F
• Passed CE,CCC,test
• Air capacity:from 40m³/h to 2500m³/h
• Pressure:from 60mbar to 1040mbar

6. Accessories:

We also have some parts for your application, if you need, welcome to tell me.

Air filter: Filter the dust particles, apply to a bad environment.

Pressure relief valve: Control gas pressure, prevent excessive pressure, damage the machine.

Silencer: reduce blower noise 5-10db,  apply to a quiet environment.

7. Application:

1. Pneumatic conveying systems.

2. Vacuum lifting systems.

3. Fish and shrimp pond oxygen supply.

4. Wastewater treatment and electroplating pool aeration.

5. Packing and printing machines.

6. Bottle drying system with air knife.

7. Dental vacuum suction machine and medical equipments.

8. Textile machines.

9. Smoke extraction in industry or kitchen.

10. Food processing drying .

11. Vegetable washing machine.

12. Industry vacuum clenaer.

13. Soil remediation

3KW≥Ring blower,  we will pack it in high quality and high strength cartons.

3KW<Ring blower, we will pack it in strong wooden carton.

Shipping way:  By sea or By air or By your agent in China.

 1. What is the warranty of your machine?

R: 18 months, any product itself question,you can contact with us.

2. What is the material of your machine , is oil free?

R: our machine is aluminum alloy, motor is 100% copper coil ,  of course, we are oil free.

3. How to operate your machine?

R: Connect with wire, and turn on the power, so you can use it directly, about the wiring method, we will tell you how to do according to your voltage, so at first , you need to tell us your voltage and phase,its important.

4. You are trading company or manufacture?

R:  We are manufacture, we can provide long-term supply with fast speed.

5. How to contact with you?

R: You can send messages to me directly by alibaba trade manager, or add me like below

Welcome to contact with us

Wechat/WhatsApp:          0086-18823126158

Email/Skype:                    luomeiele(at)

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