backnut no. 310 with female thread DN25 - 1" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN40 - 1 1/2" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN50 - 2" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN15 - 1/2" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN20 - 3/4" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN80 - 3" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN32 - 1 1/4" inch malleable cast iron galvanized for liquid & gaseous media
backnut no. 310 with female thread DN65 - 2 1/2" inch malleable cast iron galvanized for liquid & gaseous media
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.
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.
Contact For all questions we are available by phone
Mo - Fr 08:30 - 17:00
or send us an e-mail:
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Frequently asked questions 
Configurator 
Angle seat valves
Ball valves
Butterfly valves
Check valves
Coaxial valves
Compensators
DISCO check valves
Diaphragm valve
Flow control valve
Globe valves
Knife gate valve
Manometer gauge valve
Needle valves
Overflow valves
Pressure reducing valves
Safety valves
Sight glass
Solenoid valve
Stainless steel hoses
Strainer
Vent-valve
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If you have any questions, we are available by phone from Monday to Friday from 8:30 a.m. to 5:00 p.m.
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