Local:IndexProduct detail

Product center

QBK air operated double diaphragm pumps


 product class:Diaphragm pump series
 product name:QBK air operated double diaphr....




 Range of capacity      1.8~1450m³/h 
Range of head  ≤133m
Medium temperature  -10℃~120℃
Ambient temperature   Up to 40℃
Maximum working pressure suction pressure+head of pump≤1.6MPa
Motor data

Supporting power


Voltage  380V
Frequency  50HZ
Rotating speed  2900r/min,1450r/min,970r/min
Protection class  IP44/IP54
Insulation class  B/F
Material pump body , pump cover,impeller  cast iron
Pump shaft  45 steel /stainless stell 3Crl3
Mechanical seal  silicon carbide,graphite,tungsten carbide,hard alloy and etc.

  • overview
  • feature
  • purpose
  • Model significance
  • Show case
  • data behavioral
  • Application area

QBK is coosai's new developed series of AODD pump which is also the third generation, it has the virtue of long service life and nonstop operation, not only it can convey some uneasy flowed medium, with the merits the merits of self-pumping pump, diving pump, shield pump, slurry pump and impurity pump etc.

1.It's unnecessary to pour the drawing water, the suction lift reaches 5m height, the delivery lift reaches 70m length and the export pressure≥6bar.

2.Wide flow and good performance. The diameter allowed to pass the max grain reaches 10mm. The damage is very less to the pump while exhausting the slurry and impurity.

3.The delivery lift and flow can pass the pneumatic valve open to realize the step less adjustment (the pneumatic pressure adjustment is between 1-7 bar).

4.The pump has no rotary parts and no bearing seals. The diaphragm will completely separate the exhausted medium and pump running parts, working medium. The conveyed medium can't be leaked outside. Thus it will not cause the environmental pollution and human body safety dangerous while exhausting the toxin and flammable or corrosive medium.

5.No electricity. It's safe and reliable while using in the flammable and explore places.

6.It can be soaked in medium.

7.It's convenient to use and reliable to work. Only open or close the gas valve body while starting or stopping. Even if no medium operation or pausing suddenly for long time because of accident matters, the pump will not be damaged caused by this. Once overloading, the pump will automatically stop and possesses the self protection function. When the load recovers normally, it also can start automatically.

8.Simple structure and less wearing parts. This pump is simple in structure, installation and maintenance. The medium conveyed by the pump will not touch the matched pneumatic valve and coupling lever etc. Not like other kinds pumps, the performance will drop down gradually because of the damages of rotor, gear and vane etc.

9.It can transmit the adhesive liquid(the viscosity is below 10000 centipoises).

10.This pump needn't the oil lubricant. Even if idling, it has any influence to the pump. This is a characteristic of this pump.

MOREproducts with related Diaphragm pump series