4219 5: Herz DI Double Flanged Description 4219 5: Herz DI Double Flanged, Double Eccentric Butterfly Valves Request Info Other Products From HERZ Armaturen 4218 GF Commissioning valve with test points, straight body, DN 50 – 300 Read More » F4037 : Flanged 3-Way Control Valve Read More » 4219 : Butterfly Valves HERZ Armaturen Read More » 4006 PICV Pressure Independent Control Valve Read More »