Ball The Ball Du50 Ld Kshcf (Purchase No. 181); Ball The Ball Du80 Ld Kshcf (Purchase No. 624); Ball The Ball Du100 Ld Kshcf (Purchase No. 625). Du (Dn) -50, 80, 100 Mm; Ru (Pn)- 4.0 Mpa, 40 Bar, 40 Kgf/Cm2; Max. T Of The Working Environment - Up To 200 ° C; Joining - Flange; Material-Steel 20, Gost 28343-89.