R450431/E, 21w3ke190, 21w4ke250, 21w3ze190, 21w4ze250, 21w3ke90-MR, 21w4ke250-MR, 21WN5Ke190, 21WN6Ke250,
membrana epdm d.59,9mm per valvole ode 3/4 e 1 pollice, R450431/E, 21w3ke190, 21w4ke250, 21w3ze190, 21w4ze250, 21w3ke90-MR, 21w4ke250-MR, 21WN5Ke190, 21WN6Ke250,