Auto Parts Vacuum Pump Sewage Treatment Air Pump

Basic Info

  • Model NO.: 2BHB740-H37

  • Structure: Rotary Vacuum Pump

  • Vacuum Degree: High Vacuum

  • Working Conditions: Dry

  • Stage: Double

  • Power: 4.0/4.6KW

  • Color: Silver White or Customized Color

  • Trademark: MODO

  • Specification: 69*53*57CM

  • HS Code: 8414599099

  • Oil or Not: Oil Free

  • Exhauster Method: Positive Displacement Pump

  • Work Function: Suction and Blowing

  • Keyword: Sewage Vacuum Pump

  • Frequency: 50/60Hz

  • Voltage: Three Phase 200-720V

  • Warranty: 12 Months

  • Transport Package: Hard Carton with Wooden Pallet

  • Origin: China

Product Description

Recker Vacuum Pump


  1. Wide voltage and double frequency

  2. In protection class IP55, insulation class F

  3. Perfect surface

  4. Easy installation

  5. 100% oil free

  6. Low noise level

  7. No vibration and complete dynamic stability

  8. Pulsation-free discharge

  9. Higher pressure ratio

  10. Cooler running NSK or SKF bearings

  11. Temperature resist to 180°c

  12. Work 20,000 hours without maintenance

  13. Suitable for environmental protection

  14. CCC,CE,ROHS,TUV,ISO9001 certified

  15. 12 months warranty

  16. Available in stock

Recker Vacuum Pump Parameter (2BHB740-H37)

ModelMotorMaximum airflowMax.differential pressureSoundWeight

Recker Vacuum Pump Principle

     The impellers in the BHB-series machines are mounted directly on the motor shaft for noncontact compression entirely without friction. Maximum operational reliability,even at high differential pressures,is ensured by the arrangement of the bearings outside the compression chamber.  

The gas is taken in through the inlet 1,As it enters the side channel 2,the rotating impeller 3 imparts velocity to the gas in the direction of rotation.Centrifugal force in the impeller blades accelerates the gas outward and the pressure increase.Every rotation adds kinetic energy,resulting in the further increase.Every rotation adds kinetic energy,resulting in the further increase of the pressure along the side channel.The side channel narrow at the rotor,sweeping the gas off the impeller blades and discharging it through the outlet silencer 4 where it exits the side channel blower. 

Recker Vacuum Pump Features
      1.Designed and improved by the latest Europe technology,molded with high strengh ADC12 aluminum alloy,processed on precision CNC machine
      2.Two-pole motor with protection calss IP55 and insulation F,high temperature resistant to 180°c
      3.Motor reached Europe EFF2 standard,save more electricity,and more durable
      4.In front bearing structure makes dynamic stability
      5.The rotating parts are not in contact with the casing,no friction during operation,no internal lubrication needed
      6.Sealing ring is placed between hosing and motor to prevent entry of foreign matter,improve service life
      7.Wide range of powers and sizes,long term and quiet smooth operation
      8.All products are strictly tested before leaving the factory,such as no-load test,impulse winding test,frequency withstand voltage test etc.for motor.Pressure,airflow,noise test for blower

Recker Vacuum Pump Structure

Recker Vacuum Pump Applications

2.Pneumatic conveying systems
3.Lifting and holding of parts by vacuum
4.Packing and printing machines
5.Wastewater treatment and blowing in the electroplating pool
6.Filling of bags/bottles/hoppeers
7.Soil remediation
9.Papermaking and paperconditioning
11.Pharmaceutical and medical equipments
12.Beverage industry
13.Textile machines
14.Rubber and plastic peripheral equipments
15.Smoke extraction in industry
16.Semiconductors and electronic equipments

Recker Factory Pictures

Our service:

 Marketing Service

  • 100% tested CE certified blowers.

  • Special customized blowers(ATEX blower,anti-corrosion blower) for special industry.Like gas transportation,Medical industry...

  • Professional advice for model selection and further market development.

After-sale Service

  • 24 hours online

  • Experienced suggestion for blower installation and use.

  • 12 months warranty.

  • Long-term technical support.


Q: Can water be pumped through my blower?
A: No, clean dry air only

Q: What kind of oil do I need for my blower?
A: All our Recker blowers are oil-free and maintenance-free designed.

Q: Can I pump combustible or corrosive gas through my blower?
A: Normally,if you'd like to use blower for combustible or corrosive gas conveying,we suggest you to choose our explosion proof ATEX blower or anti-corrosion(special customized) .

Q: Are the foam pieces inside my blower for filtration?
A: No, they are not for filtration. They are designed for sound reduction, an inlet filter should be sourced separately.

Q: What will be the consequences if I don't use a relief valve on my blower?
A: The blower may get overheat, and may cause thermal expansion of internal parts, which will do harm to the impeller and Bearings.