| 摘要 |
Pressurized dispensing systems are provided, for dispensing multi-component products. Some dispensing systems include (a) an outer body (210) defining a first chamber constructed to contain a first component of the product; (b) an inner container (202), disposed within said body (210), defining a second chamber constructed to contain a second component of the product and maintain the second component separate from the first component; (c) a dispensing head (50), in fluid communication with the first and second chambers, through which the product is dispensed; and (d) a valve assembly (98), including a valve stem (105) constructed to move between a closed position, in which said first and second chambers are sealed, and an open position, in which said first and second components flow simultaneously from the first and second chambers to said dispensing head (50), a valve body (108) surrounding at least a portion of the valve stem (105). The dispensing systems may include, for example, a sealing member (100) constructed to provide a seal between the valve stem (105)and an inner wall of the valve body (108), the sealing member (100) including two portions having different outer diameters.
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