Two-flange knee of N foot

The two-flange knees with N foot are used in water pipelines construction to alter the pipe direction by the angle of 90°, to outlet of the pipeline to the surface. This type of knees is useful to install hydrants.


Drinking water up to maximum 40°C.


The State Hygiene Institute in Warsaw.

Flange terminals

according to PN-EN 1092-2


Gray cast iron of the GJL-250 type or spheroidal of the GJS-500-7 type.

Anti-corrosion protection:

Gray cast iron- INERTOL BS10 (bituminous coating).
spheroidal cast iron with EP paint application 250 μm thick and 3 kV puncture resistant.

Download catalogue card
“Kolano dwukołnierzowe ze stopką N” PDF, 638 KB

Download declaration of performance
“Kształtki z żeliwa szarego” PDF, 78 KB

Download declaration of performance
“Kształtki z żeliwa sferoidalnego” PDF, 79 KB