R450432/B, membrana d.109,8mm nbr elettrovalvola 2" Ode 21w7kb500, 21w7zb500, 21wn9kb500, 21W7KB500-MR,

R450432/B, membrana d.109,8mm nbr elettrovalvola 2" Ode 21w7kb500, 21w7zb500, 21wn9kb500, 21W7KB500-MR, 21w7zb500, 21wn9kb500,