Product Application

 QBK series air operated diaphragm pump is driven by air. It is a kind of positive displacement pumps which volume changes caused by compressing diaphragms in both side.

Wenzhou Defu Machinery Co., Ltd

Defu Machinery, founded in 2012, is an enterprise in designing, developing, manufacturing and selling water pumps, including diesel engine pump, centrifugal pump, self priming pump, diaphragm pump and other pump. Our factory are located in Shanghai and Jiangsu, which Called Shanghai Y&L Pump Co., Ltd and Jiangsu Sele Pump Co., Ltd.

As a professional water pump manufacturer in China, we are able to offer you the most professional and suitable pumping solution according to your actual needs.

How we will help you?

1. Email Service: We will reply you within 3 hours in weekdays and 8 hours in weekend.

2. Phone Service: You can directly call us to talk with us.

3. Factory Visit: If you want to know how our factory works or company, you can tell us.