Top 3 Questions

We set the default pressure for overflow valves to the lowest level possible. The purpose of this is to relieve the spring and valve seat/seal. For example UV01020005 corner overflow valve 1” inch IG type UV01 set range 2.0 - 12 bar (always delivered with a default pressure of approx. 2 bar) 

The UV13 series is excepted!
This is generally delivered in the medium range of the setpoint value.

We are also happy to set the overflow valve to your desired pressure at the factory. Please simply indicate this in your order.


The membrane-operated pressure reducing valve is frequently used in applications with low to normal back pressure. Due to the membrane, it also delivers more sensitive regulation.

The piston-operated pressure reducing valve is frequently used with high back pressures and aggressive media. It has an extremely robust design, giving it a high level of safety in case of pressure surges.


The pressure gauges are classified in category 1 under the assumption for use with group 1 gases.



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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



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


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.


We always strive to find the best solution for our customers. It is our goal and incentive to have completely satisfied customers.


Technical and commercial expertise form the basis for developing qualified solutions tailored precisely to the needs of our customers.


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.



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+49 7143/9666-900

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Need help?

If you have any questions, we are available by phone from Monday to Friday from 8:30 a.m. to 5:00 p.m.

order via mail:

07143 / 96669 - 00