Report - valvole di ritegno - Hellopro · 2016-12-21 · GB 019 DN 15 - 100 • 1/2” - 4” D A L B C DN 15 20 25 32 40 50 65 80 100 A 15 202431 38 47 62 77 95 B 53 63 73 84 94 107 131 140

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