DIN 3630:2024-03
饮用水供应系统用金属材料截止阀、止回阀、供排气阀和控制阀 要求和试验方法
Shut-off valves, check valves, air supply/exhaust valves and control valves made of metallic materials for potable water supply systems - Requirements and test methods / Note: Date of issue 2024-01-26