The pump has a diaphragm which is pushed up and down, creating a vacuum effect that draws in water. Know how to operate the pump is just as important as knowing which one to acquire. OPEI suggests ...

The reason for the recall is a vacuum pump malfunction, which occurs due to the use of fuel with a high ethyl alcohol content. The pump valve may swell and partially block the negative pressure ...

Our main products are RS , 2RS, 2XZ, SV, HP, HPV/H series. The application is wide , such as vacuum refrigeration,refrigerant recovery device,tea packaging,air conditioner,automobile ...

There’s a reason 700K+ energy professionals have subscribed.

Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, People’s Republic of China ...