Name: QBK-50 (2inch) Corrosive Liquid Air Operated Diaphragm Pump
Brand: DEFU
Availability: InStock

Product Details

Air operated double diaphragm pump

New product: DEFU can supply different sizes and materials diaphragm pump

2 inch air operated diaphragm pump :

Model: QBK-50(50mm for inlet/50mm for outlet)

Flow rate:0-35.22m3/h

Head: 0-84m

Suction lift:8m

Max. Air Pressure: 8.4kg/cm2

Max.air consumption:2.8m3/min

Defu's QBK series diaphragm pump specifications:

Inlet/outlet	06-80mm
Capacity	0-63.6m3/h
Head	0-84m
Sucktion Lift	6.4-8m
Exit Pressure	7-8.4 kgf/cm2
Max Grain Dia	9.4mm
Max Air Pressure	8.4 kgf/cm2
Max Air Consumption	9.8 m3/min
Certification	ISO9001:2008;CE
Pump body	Stainless Steel, Cast Iron, Aluminum, Polypropylene, Engineering Plastic, Cast Steel+Teflon Lined, Cast Iron+Rubber Lined;
Diaphragm	NBR,Viton,Neoprene,Teflon,EPDM,Santoprene,Hytrel,PVDE etc.

Parameters Table

Click each model to get more information

Model	Flow (m3/h)	Head (m)	Suction Stroke (m)	Max Particle Dia. (mm)	Max.Air Pressure (kg/cm2)	Max.Air Consumption (m3/min)
QBK06/10	0-1.62	0-84	6.4	1.6	7	0.14
QBK-15	0-3.42	0-84	7.6	2.5	8.4	0.56
QBK-25	0-9.42	0-84	8	4	8.4	1.12
QBK-40	0-21.48	0-84	8	5	8.4	2.24
QBK-50	0-35.22	0-84	8	6	8.4	2.8
QBK-80	0-63.6	0-84	8	9.4	8.4	9.8

Stainless Steel Pump (SS304/316/316L)

Plastic Pump (PP, PVDF, Acetal)

Aluminum Alloy Pump

More applications

The Way Of Transportation

According to your quantity or requirements, we can send the goods to u By International Express or By Sea

International Express:(We will choose fast and economical way for u! )

express way etc.

By sea:(We will calaculate according to the below information if u choose this way)

For Example:

QBK-50(2inch)

Gross Weight: 25KGS-30KGS (according to different materials of pump)

Package Size: about 0.15m3 (Carton)

More other sizes please contact us!

The below information will help u to choose us!

Company introduction: DEFU

Defu Machinery is an Enterprise involved in designing ,developing ,manufacturing and selling water pumps , Including self priming pump ,centrifugal pump ,diaphragm pump , gear pump , diesel engine pump and some others . Relying on the local industrial chain , DEFU has established its production base in Shanghai ,Hubei and Shandong province .

Practical Application from our customers

1. Q: Can I know more about your products?

A: Pls view our website: or contact us!

2. Q: What’s your MOQ of this item?

A: 1~2PCS

3. Q: What is the lead time?

A : For the order in stock ,we will deliver goods at once against payment.

For the orders out of stock , the products time is 7 days , deliver time is 3-6days for express , if by sea ,the deliver time is base on the shipping date.

4. Q: where is your loading port?

A: Shanghai or Ningbo, China port,also we accept other

5. Q: What is the Warranty ?

A: The whole pump is guaranteed within 1 year, the pump's spare parts are guranteed for 3 months from the date of delivery.

6. Q : How is the pump delivered to us ?

A : For small order will be delivered by internation express ,like DHL,TNT ,FEDEX,UPS.

For large order ,it will be delivered by air ,sea ,vehicle or multi-modal transport.

7. Q: What is your quality of the diaphragm pumps?

A: Please see the below feedback from our customers.

More Sizes Of the Pumps Please Click Here

Welcome To Our Factory!

Contact me if u take interest in our pumps.