| 摘要 |
A drain trap comprises a plurality of flat water conveying plates with fine clearances therebetween and securely fixed to each other by ribs. Below said water conveying plates is fixed another water conveying plate of Y-shape in section having a water gathering passage and having fine clearances between the upper arms thereof and said flat plates, said flat plates and said Y-shaped plate being securely fixed to one another through further ribs. Said trap has a narrow end tightly engagable with a drain pipe through packing material. |
