| 摘要 |
A valve suitable for dispensing effervescent liquids under pressure includes a frusto-conical core member (32) disposed in a similarly configured frusto-conical valve chamber section (14) to both define a restrictive diffusing flow path when the valve is open and the sole pressure seal when the valve is closed. The pressure seal is created along a substantial length of the core member (32) which is preferably made of resiliently compressible plastic to enhance the seal. The outlet spout (13) located downstream of the diffusing flow path is provided with interior baffles (21) to prevent vortical flow and the resulting frothing in the liquid.
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