Application 1 Design According to DIN 3320-F4 2 Flange End Face to DIN2532/ 2533 3 Nominal Pressure PN10/ PN16 Test Working pressure PN16 Shell test pressure 15bars/ 24bars Seat test pressure 11bars/ 17.6bars Main Parts and Materials Number Part Name Material 1 Body Cast Iron/ GG25 2 Disc Ductilc Iron/ GGG40 3 seat Stainless steel/ Brass 4 Handwheel Ductilc Iron/ GGG40