Piston vacuum pump principle are similar to rotary vane vacuum pump but the structure is different. Piston vacuum pump use slide valve mechanism to change the suction chamber volume, so it is also called slide valve pump. Although it is an old pump, compare to the rotary vane pump, it is high wor...

In styrene monomer and polystyrene plants are needed lots of vacuum systems generally, and some of the vacuum columns require vacuums of 10 mmHg A or better. Steam jet ejector were the standard vacuum producers for such applications in the past. A major drawback to using steam has been the contam...

Vacuum distillation principle: with the help of the vacuum pump to reduce the pressure inside of system, then it can reduce the boiling point of liquid, some organic compounds can be distilled at a much lower than the normal boiling point temperature. Part 1, The relevant parameters of roots liqu...

In coconut& palm oil bleaching process, we should use vacuum pump to create vacuum for the agitator. Normally we use the piston vacuum pump 2H series model as working pump. Complete process PID as below: This system include: piston vacuum pump, water separator+tank+agitator+filter+transfer p...

Oil lubricated rotate screw vacuum pump As per  figure (1), oil lubricated screw pump has oil filled on its rotor chamber, working as lubricant, sealant and coolant. This type of screw pump can achieve high capacity (according to one famous brand, the capacity range can be 400~5004m³/hr), but its...

Instant foodstuffs is one very important part in Japan and other countries nowadays. Some of the meals are always freeze-dried ready meals. By converting the vacuum technology from liquid ring, some of the foods are able to achieve considerable energy saving and easily made. Maybe all other remai...

Vacuum pump system maybe breakdown by some external factors if we have no pay attention on it during operation. So we should learn more about these external factors that can affect vacuum pump system. 1、Effect of steam pressure The relatively large factor that affecting the vacuum pump system is...

Vacuum pump maintenance schedule Vacuum pump maintenance  interval  is decided by its working environment.  below items is suggested to check at regular interval: 1. Daily maintenance items: Check the level and color of vacuum pump oil. 2. Weekly maintenance : Check if the vacuum pump is leaking,...

All our pumps are interchangeable with Siemens pump both in dimension and performance. Most our client are using our pump to replace their existed Siemens and Nash pump. Some clients are also buying our spare parts for original Siemens pump repairment. As a pioneer in vacuum pump field, EVP compa...

The proper installation of a water ring vacuum pump is critical to its subsequent operation and maintenance. As with any pump, care should be taken in unpacking the pump so as not to damage or misalign the assembly. For pump and motor units mounted on a baseplate, the unit should be lifted by the...