| 摘要 |
1444419 Trap L EKSTROM 28 Aug 1973 [28 Aug 1972] 40457/73 Heading E1C A trap has two water seals arranged in series between the inlet 4 and outlet 6 and a capillary bleed-hole 7 into the air chamber between the seals, the chamber and bleed hole serving to damp surges of liquid waste by a transient build up of air pressure in the chamber. The trap has two parts 2, 3 with concentric circular tongues. The parts are removably located in a casing 1 and the lower part has a fin 5 projecting towards the outlet 6. |
