| 摘要 |
1491158 Pressurized dispenser valves COSTER TECNOLOGIE SPECIALI SpA 9 May 1975 [21 May 1974] 19528/75 Heading F1R A valve housing 1 crimped to a cup 2 has an annular recess 9 formed by a base 3 and inner and outer peripheral rims 5, 4, the inner rim being shorter and engaging a sealing washer 7 which extends across an aperture in the cup 2. The base 3 has one or more apertures 6. During filling fluid flows round the outer edge of the seal 7, into the recess 9, and into a can on which the cup is mounted, through apertures 6. The housing has sealing washer support ribs 8 and the seal is puncturable to discharge the container contents through the aperture in the cup 2. |
