3631: Red-brass Combined Free-flow and Backflow-preventer valve

acc. to DIN EN 13959, Material acc. to DIN 50930-6 rather currently valid UBA positive list, with male-thread, non-rising as well as dead storage free long-life Red-brass upper-part with grease chamber, with Drain valve, DIN-DVGW certified (type 3606), noise-class approval class 1, Nominal pressure PN 16, EPDM sealing with KTW / W270 approval, max. operating temperature 90°C as well as pre-assembled union coupling Viega Profipress