DIN EN 14453-2005 防饮用水回流污染的装置.带恒定大气压力孔的管阻流器DN10至DN 20. C型D系列
Devices to prevent pollution by backflow of potable water - Pipe interrupter with permanent atmospheric vent DN 10 to DN 20 - Family D, type C; German version EN 14453:2005
This European standard specifies the characteristics of pipe interrupters with permanent atmospheric vent nominal size DN 10 up to DN 32 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 ?and for 1 h at 90 ?