La description

Non-return valve, Pipe exterior O 6, PN max. 400, a/f1 17, a/f2 19, a/f3 19, galvanised steel. Non-return valve, pipe connection on both sides, heavy type
L1 [mm]63.5
Material Galvanised steel (DIN 2353)
Min. opening pressure [bar]1 +/- 20 %
PN [bar]400
Page No. HK822
Tube O.D. [mm]6
a/f 1 [mm]17.0
a/f 2 [mm]19.0
a/f 3 [mm]19.0
''