Roots pump is a common environmental protection equipment, at present, in the food, textile, machinery, electronics industry and other industries have been widely used. Roots pump can be used together with water ring pump, vane pump, slide valve pump. Roots vacuum pump is a rotary variable-volum...

One of EVP customer are changing from an old rotary compressor to water ring pumps used in his chemical plant, the plant consists of three Reactors, each reactor need a water ring vacuum pump from 0.6barA to 2barA.and the rotary compressor from 2 bar to 12bar. For some reasons, he need to change ...

Vacuum drying ovens are widely used in the electronics and chemical industries, and are especially suitable for fast and efficient drying of heat sensitive, easily decomposable, oxidizable materials and complex components. In this application, customers usually use EVP series dry scroll vacuum pu...

One of the features of the hydraulic drive is that it is easy to achieve overload protection. This means the overflow valve is active. It is through the opening of the valve port to keep the pressure of the system constant or limit the maximum pressure. The overflow valve can not only used as a s...

Cleaning method: The most common fault: the welding slag, rust, slag, etc. in the pipeline cause blockage or jam in the throttle hole, the guiding part, and the balance hole of the lower bonnet, causing strain and scratches on the curved surface of the valve core, the guide surface, and sealing. ...

The work of a vacuum tanker is hard and dirty. It exerts a lot of wear and tear on the materials, because it takes place in tough environments with tons of substances and liquids that may be inflammable or explosive. The suction task demands that the vacuum truck pump on the vehicle is as low-noi...

Like the 2BV water ring pump and the 2BE water ring pump, the SS304 material and SS316L material are often used. Most end users do not have professional material testing equipment. Many customers prefer to use magnets to simply test the raw materials are stainless steel or cast iron. 2BV water ri...

Overload refers to exceeding the specified carrying standard, that is, exceeding the rated load of the equipment itself. The general phenomenon is that the current become large, the electrical equipment temperature become higher, and the long-term overload of the line will reduce the line insulat...

The fluid should be filled in the casing before the pump work. The impeller will be rotated by the bearing with high speed. The fluid in the casing will be rotated at the same time.The fluid will absorb the energy when it be throw from the center of the impeller to the outside within the centrifu...

As it known to all, water ring vacuum pump in the general case use water as working fluid, in the process of water into the discharge to achieve the purpose of pumping air into vacuum state, and in the process of water absorption into sent by the pumping action of the water hitting the wall, impe...