Fluid handling – Processes – Carbonated beverage handling processes
Patent
1994-11-04
1996-07-23
Michalsky, Gerald A.
Fluid handling
Processes
Carbonated beverage handling processes
1371701, 137801, 251118, 251122, 251155, F16K 4704
Patent
active
055380280
ABSTRACT:
A valve suitable for dispensing effervescent liquids under pressure includes a frusto-conical core member disposed in a similarly configured frusto-conical valve chamber section 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 which is preferably made of resiliently compressible plastic to enhance the seal. The outlet spout located downstream of the diffusing flow path is provided with interior baffles to prevent vortical flow and the resulting frothing in the liquid. The valve chamber and components are sloped to assure that all liquid downstream of the seal can flow toward the outlet spout after the valve is closed. Immediately downstream of the diffusing flow path there is a transition path permitting the flowing liquid to expand gradually without cavitation before entering the expanded downstream end of the valve chamber. That chamber is sized sufficiently small so that the outlet spout serves as a restriction to create a back pressure in the liquid and prevent gas bubbles from escaping.
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