The inlet and exhaust ports written on the EVP-PB series scroll pump data are KF25. In fact, the port left on the pump itself is a 3/4″ internal thread interface, and an adapter was added to convert the 3/4″ internal thread to KF25. If the customer does not want the KF interface, unsc...

Because the gas is isothermally compressed during the compression process of the liquid ring compressor, the chlorine gas compressor using 96%~98% concentrated sulfuric acid as the working fluid is widely used in the preparation of liquid chlorine in the chemical and petrochemical industries and ...

Single stage rotary vane pump as one of the most common vacuum pump, its limit vacuum can reach 10Pa, its simple structure, favored by the majority of customers. Rotary vane pump is by the rotation of rotating parts to achieve periodic work, the most common rotating parts is the rotary vane. Gen...

EVP-150PB oil-free scroll vacuum pump is a dry vacuum pump successfully developed by Shanghai EVP Vacuum Technology Co., Ltd. – Vacuum Pump R&D Department in November 2021.  It has been officially mass-produced and sold in December 2021, getting very positive  feedback from clients; Thi...

Absorbed power”, also called “pump input power”, in general refers to the “active power” of the motor. And the shaft power is the work given to the pump shaft by the motor per unit time. The shaft will power (motor power) to the power of the power parts (impeller). T...

If the sealing method of the water ring vacuum pump is a gland packing seal, the user wants to change it to a mechanical seal vacuum pump. Then let’s take the 2BE1-153 water ring vacuum pump as an example, the user needs to replace the following parts: replace a new pump shaft, replace a new impe...

Corrosion has always been one of the most headache hazards of chemical equipment. A little carelessness can damage the equipment, or cause an accident or even a disaster. According to relevant statistics, about 60% of the damage of chemical equipment is caused by corrosion. Therefore, when select...

Diffusion pump pump as one of the most common high vacuum pump, its ultimate vacuum can up to 10-5Pa, but in actual use, we do not recommend using vacuum pump near ultimate vacuum for a long time, the most direct impact is that the pumping capacity will decrease dramatically, and long-term use at...

Full circulation is with a heat exchanger, and the circulating working fluid has been used repeatedly; Partial circulation means that part of the working fluid is drained then it will be supplemented accordingly; For example, one system requires the water circulation 2 m3/h, and the full circulat...

As we all know, the main sealing methods of water ring vacuum pumps are gland packing seals and mechanical seals. This article mainly shares relevant knowledge of gland packing seals. The so-called packing seal is to fill the packing into the pump for sealing. It is a very common sealing method f...