FAQ-Product
The lowest throughput we can record with our measuring instruments is that at 30mbar
No, this is not possible. The vacuum breakers must be operated in a vertical installation position (connection below).
We have two different vent valves in our product range. The type VB01/VB03 is fixed, opens at a pressure of -6mbar and thus prevents the formation of a vacuum/vacuum. The pressure of -6mbar cannot be changed. With the types VB02/VB04 there is the possibility to allow a certain vacuum and to open only in the range between -100mbar and -800mbar. These valves can be preset to a specified pressure and sealed at the factory for an additional charge. The setting can also be made by the customer. Instructions are available on request.
In the event of a vacuum, the opening on the side of the vent valves pulls air from the environment into the tank and thus prevents the vacuum. Due to the thread "attached" to this thread, it is possible, for example, to use clean/filtered air from a separate container in the case of sensitive media in the tank/container in order to prevent possible reactions or contamination.
As standard, these vacuum breakers are delivered freely adjustable. However, we can also preset them for an extra charge and seal them accordingly.
There for you
Special requests, spare parts or a quick support? Our staff will answer your questions and concerns immediately.
You can reach us from Monday to Friday at +497143 9666900 and any time at sales@nieruf.com
Quality
Our certified quality management according to DIN EN ISO 9001: 2015 is part of our DNA. With our test stands we can carry out pressure tests with up to 350 bar with air and water as well as leak tests according to DIN EN 122661.
This is NieRuf
Committed
Commitment engenders trust. We stand by our word and are convinced that as a result not only our customers but also everyone we work with can rely on us.
Motivated
We always strive to find the best solution for our customers. It is our goal and incentive to have completely satisfied customers.
Competently
Technical and commercial expertise form the basis for developing qualified solutions tailored precisely to the needs of our customers.
Flexible
We do not adhere to rigid guidelines but instead focus on the individual wishes and needs of our customers. They are more important to us than internal company processes.
Contact 
Resistance check 
Frequently asked questions 
Configurator 