Art. 820g25 Valvola a sfera wafer con corpo in ghisa G25, e sfera o in ottone cromato oppure in acciaio inossidabile sedi in PTFE, o-ring di gomma o, a richiesta di Viton, per flange DIN PN 16
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Art. 820 GS25 Wafer type ball valve with body in cast iron G25, and with ball or in chromium plated brass or in stainless steel, PTFE seats, rubber o-ring or on request Viton o-ring, flanged ends DIN PN 16
