| 摘要 |
PURPOSE: To maintain sealability which is sure for a long period of time by integrally and securely coupling a head and an adapter at their outer peripheral walls and further liquid-tightly coupling the head and the adapter to each other with a collar constituting a sealing device on the outer side thereof. CONSTITUTION: The adapter 11 and the head 12 are integrally connected by an outside wall 18 to constitute one unit, by which a discharge space is formed within the regions of both. A connecting nozzle extends below the adapter 11 where a filter cartridge is mounted. A toric outer peripheral web 21 extends integrally and horizontally from the outside wall 18. A reinforcing ring 22 extends downward from the terminal part on the outer side of this web and the collar 29 extends in an upper outward direction respectively coaxially. Since a holder presses a cap 73 to a filter bottle 63 at the time of completion of assembly, the upper side marginal parts 40, 41 of a foil sack and a spring ring 44 or the like are capable of making a contribution to sealing as these members are made of synthetic resins. |
