公开(公告)号：EP1485539B1

公开(公告)日：2005-05-25

申请号：EP03746544.0

申请日：2003-03-20

申请人： JohnsonDiversey, Inc.

发明人： Hague, Barry, DiverseyLever Equipment Ltd. ,  Oliver, Stephen, DiverseyLever Equipment Ltd.

IPC分类号： E03C1/046 ,  B01F5/04

CPC分类号： E03C1/046 ,  B01F3/08 ,  B01F5/0413 ,  B01F5/043 ,  B01F2003/0896 ,  B01F2215/004

摘要： An eductor (1) having an air gap (5), a venturi structure (3), and a non-return valve (19) located in the air gap (5). The non-return valve is removable and allows the eductor to be operated as an air gap eductor or a non-return valve eductor. A non-return valve cartridge (19) for installing in to the air gap (5) of an air gap eductor (1), so that the eductor can be operated as a non-return valve eductor. A method of retrofitting a non-return valve (19) in an air gap eductor (1).