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Why does the gap affect vacuum degree?

Why does the gap affect vacuum degree

Gaps can affect the vacuum degree because they allow air to leak into the system, reducing the ability of the pump to maintain a high level of vacuum.

This is particularly important in applications where a high level of vacuum is required for optimal performance, such as in semiconductor manufacturing or scientific research.


One common misconception is that installing an exhaust filter will negatively impact the vacuum degree. However, this is not true. In fact, a well-designed exhaust filter, like the Rietschle 731468, can actually improve the performance of the pump by allowing it to operate more smoothly and efficiently.


There are several factors that can contribute to a decrease in vacuum degree, including leaks, noise, high temperatures, oil degradation, mixed oil, water in the oil, and expansion of the assembly gap. Of these factors, the assembly gap is often the most difficult to detect and requires specialized testing to identify and address.


If you’re experiencing a decrease in vacuum degree, it’s important to investigate all possible causes, including those listed above.

One effective way to do this is to conduct a leak test using a method described in our article “Solving Vacuum Equipment and Oil Mist Separator Leakage Problems in 10 Words” (available upon request from customer service). Installing a high-quality exhaust filter, like the Rietschle 731468, can also help prevent leaks at the exhaust port and improve overall pump performance.


As a worker operating a vacuum pump, it’s important to stay vigilant for any signs of trouble, such as unusual noises or smells. If you notice anything out of the ordinary, it’s important to investigate and address the issue as soon as possible. Regular maintenance, such as checking for leaks, using high-quality oil, and keeping the pump clean, can also go a long way towards preventing problems and maintaining optimal performance.

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