The marine stainless steel ball valve is CB/T 4480-2017 standard. Nominal diameter: DN10~150 Nominal working pressure: PN6~40(0.6~4MPa) Liquid less than 150℃, including water, seawater, oil, air, and corrosive liquid of vessel fire pipeline system Material table of main parts: Part Name Material Valve body, ball CF3, CF8, CF3M, CF8M Stern