With our pre-assembled flange connection sets, you can simply and quickly add the right screws, nuts and washers to your flanges and Fittings. You do not need to look for each screw and nut individually but instead can purchase them from us as finished sets. The sets are divided into simple flange connections and pre-assembled non-return valves / flange sets. By using our filter function, you can simply enter the desired nominal width, the flange type, e.g. PN10, PN16, PN25 and PN40 and the desired material, e.g. steel or stainless steel, and you will automatically receive the desired set comprising the right screws, nuts and washers.
joint set flange/flange DN15 - 1/2" Inch for flange PN10/16/25/40 stainless steel
joint set flange/flange DN10 - 3/8" Inch for flange PN10/16/25/40 stainless steel
joint set check valve/flange DN65 - 2 1/2" Inch for flange PN10/16 steel
joint set check valve/flange DN50 - 2" Inch for flange PN25/40 steel
joint set butterfly valve/flange DN65 - 2 1/2" Inch for flange PN16 steel
joint set dual plate check valve/flange DN50 - 2" Inch for flange PN10/16 steel
joint set check valve/flange DN50 - 2" Inch for flange PN10/16 steel
joint set dual plate check valve/flange DN65 - 2 1/2" Inch for flange PN10/16 steel
Special requests, spare parts or a quick support? Our staff will answer your questions and concerns immediately.
Mon. - Fri. from 08:30 - 17:00
Phone: +49 7143/9666-901
sales@nieruf.com
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:
Resistance check 
Frequently asked questions 
Configurator 
Angle seat valves
Ball valves
Butterfly valves
Check valves
Coaxial valves
Compensators
DISCO check valves
Diaphragm valve
Flow control valve
Gate valves
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
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.
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