1.Diaphragm pump transmission mechanism and liquid cavity used special rubber diaphragm isolation so that the working parts can always work in good lubricating conditions. Therefore this kind of pump can be used out of water.2.Diaphragm pump has the good self-absorbing capacity. large displacement, high pressure, good atomization, can meet the the needs for plant-protection. All parts in the diaphragm pump touch with chemical liquid by using macromolecule chemical coating, so that it had the good resist corrosion.3.The major parts of diaphragm pump are produced with aluminium alloy die-casting technology to improve the strength and precision.4.The structure of diaphragm pump is simple and reasonable with few easily- damaged parts. It is convenient in operation and maintenance with fine appearance and light weight.
| Type | Power | Speed (RPM) | Work pressure (Mpa) | Flow (L/min) | Dimension (CM) | |
| Gasoline engine (HP) | Electric motor(KW) | |||||
| 3WM - 60/300 | 8 | 4 | 600 | 2.5 - 3.0 | 60 | 160×95×120 |
| 3WM - 45/300 | 6.5 | 3 | 600 | 2.5 - 3.0 | 40 | 130×95×113 |
Manufacturing Base
Patented Technologies

Jinhua Shuangding Machinery Co., Ltd. was founded in 2011, specializing in the development Manufacture and sales of the brand "SHANG DING", "JIN SHUANG DING", "A-FARMERY" series of PTO diaphragm pumps, spray nozzles, spray pipes, control regulators that match different power equipment (such as electric motor, diesel engine, gasoline engine, tractor, and motor vehicle, etc) to form various models of sprayer.
Since our establishment, we have devoted ourselves to developing various PTO diaphragm pumps, spray nozzle sets, filters, and control regulators. Based on advanced technology and scientific management, a modern production line, complete test equipment, and a quality control system, our product quality improves. The products are well sold all over the domestic market and also exported to Europe, Africa, Southeast Asia, and other countries all over the world, and obtain consistent customer praise.
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