2 "zinc U2, NR 59, NR 331 straight union nut 331-9V

APPLICATION
Cast iron couplings for the transmission of non-aggressive gases and liquids are used in threaded pipe connections, in particular in water, gas, steam, central heating, sprinkler systems, etc. for transporting non-aggressive liquids and gases.
SURFACE / GALVANIZING
Fasteners can be delivered as ordered with black or galvanized surface.
According to the PN-EN 10242 standard, the weight of the zinc coating in relation to the surface is greater than 500 g / m2, which corresponds to an average layer thickness of 70 m.
Both the black and galvanized surfaces are protected against corrosion.
The anti-corrosion protection does not contain polycyclic aromatic hydrocarbons.
WORKING PRESSURE
- 2.5 MPa / 25 bar / at -20oC to 120oC
- 2.0 MPa /