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6 cfm Vacuum pump 3/4 HP aspirator vacuum pump wholesale for refrigeration, HVAC system 2RS-3

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Wenling Hongbaoshi Vacuum Equipment Factory

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Quick Details

Place of Origin: Zhejiang China
Brand Name: Hong Bao Shi
Model Number: 2RS-3
Structure: two-stage
Usage: Air Pump
Application: pumping air
Power: Electric
Fuel: electric vacuum pump
Pressure: High Pressure
COLOR: Blue, black, red, green, purple, orange
Free air displacement: 6CFM/7CFM
Ultimate vacuum: 2 Pa
rotary /speed: 3500/2800 rpm
Power: 3/4 HP
Oil capacity: 370 ml
Dimension: 360mm*135mm*275mm
weight: 12.5kg
Application: HVAC, refrigeration, vacuum package, automotive
Warranty: One Year
Standard or Nonstandard: Standard
Theory: Vacuum Pump
Delivery Detail: 5 days after payment
Selling Units: Single item
Single package size: 49X33X21 cm
Single gross weight: 19.5 KG
Package Type: one or two set packed in a carton box
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Product Description

best sales supplier 6CFM 3/4HP Rotary Vane Vacuum Pump Air Condition Refrigerant pump breast enlargement pump 




The double stage vacuum level is higher,the sealing property is higher.

· Dual voltage vacuum pump: it can be custom-made in different voltages, like 220V/50Hz and 110V/60Hz.

· High efficiency and low noise, heavy-duty aluminum alloy casing.

· Oil drain plug positioned at Bottom of oil tank. Internal high volume cooling fan for extended use life,it is thermally protected.

· Exhaust port with exhaust cap, direct drive motor allowing easy starting which is maintenance free.

· Large oil sight glass for monitoring oil levels, ON/OFF switch.

· Non slip cushion handle, the vacuum pump will be packaged with a bottle of vacuum pump oil when delivered.

· Environmental Design - The tank has been equipped with separating devices at the exhaust port to prevent oil spraying and to reduce pollution.

· Oil anti-backflow valve design: The gas inlet is specially designed to prevent oil from flowing back and polluting the container and hoses when stop pumping.

· The pump is specially designed for low temperature environment, and large starting torque guarantees to start normally under cold winters extreme low temperature.

· Used the full cooper wire motor.Maintenance Free Direct Drive Motor.

· Diverse color for free choice, other colour can be customized by customers requirements.

· Low noise and long service life.

· Heavy duty rotors and bearings

· Heavy duty steel handle with lift hook for well-balanced carrying

· Tethered port caps stay with the pump

· Metal with rubber overlay base for stability


2RS series vacuum pump is two stage vacuum pump oil sealed rotary vane, or high vacuum pumps, they are widely applicable to the following fields:

1). Special vacuum pump for food packaging equipment

2). Special vacuum pump for tea packaging equipment

3). Special vacuum pump for refrigeration and maintenance

4). Vacuum pump for laboratory equipment

5). Printed special vacuum pump

6). Special vacuum pump for medical equipment

7). Vacuum drying special vacuum pump

8). Special vacuum pump for resin glue

9). Special vacuum pump for mobile phone patch

10). Special vacuum pump for teaching instruments

11) Vacuum coating,vacuum adsorption, vacuum forming, photo-voltaic technology, aviation,and many other fields





Oil sealed single stage rotary vane vacuum pump specification
Free air displacementCFM7612101412
Ultimate vacuumPA0.20.20.2
Rotating Speed(rpm)350028001720144017201440
Power(HP) 3/411   
Oil Capacity(ml)370550   550   
Payment termT/T,LC,Western union
Loading portShanghai or Ningbo


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Exploded Drawing Of Single Stage Vacuum Pump

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1.Keep the pump clean and prevent foreign matter from entering it.

2.Keep the oil level. Do not keep it running without oil.

3.Keep the oil clean. If it becomes dirty, muddy or has water or other volatile substances which affect limit vacuum the oil should be replaced. Before replacing the oil, start the pump and have it run about 30 minutes to make the oil thin and then stop it and let out the oil from the oil-outing mouth. Then have it run for 1-2 minutes with the gas-entering mouth open. During this time, add a small quantity of clean oil from the gas.Entering mouth so as to replace the remaining oil in the pump. Do it repeatedly. After making sure the pump is clean put on the oil-outing screw plug and then fill clean pump oil to the oil-level line from the oiling mouth.

4.If it is not in use for long, cover the oiling cap and exhaust cap and put it in a dry place. Meanwhile, damp proof and anti-rust should be considered.

5.If it needs removing and fixing is sure to have an experienced or professional technician one does it.


1.Do not pump inflammable, explosive and poisonous gases.

2.Do not pump gases which can corrode metals and can exert chemical changes with the pump oil.

3.Do not pump gases containing pellet dust and gases with plenty of steam.

4.The temperature of the pumped gas should not be over 80° and the environment temperature should be 5 - 6.

5.Do not use it as a compression or a convey pump.

6.Do not use or operate without oil.

7.Do not pull on the wire when unplugging from the outlet.

8.Do not put heavy weights on the wire to avoid being extruded.

9.Do not use when the plug or outlet if it is damaged.

10. Do not plug or unplug with your wet hands.

11.Unplug or switch off the machine when there is any kind of leak of coal gas.





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