3878970 is referenced by 51 patents and cites 2 patents.

A method of dispensing beer out of a single faucet from one, or from a number of kegs separately connected by suitable ducts with a header communicating with the faucet. A control valve device for each keg has a chamber forming a part of its duct. Float valves, one in each chamber, are operable upon decrease in the amount of fluid in their chambers to interrupt communication between the chamber outlets and the header. Differential pressure actuated valve means in each chamber functions to interrupt communication between its interior and the chamber inlet in response to decrease in pressure at said inlet.

Title
Beer dispensing instrumentalities and method
Application Number
05/441,140
Publication Number
3878970
Application Date
February 11, 1974
Publication Date
April 22, 1975
Inventor
Nezworski James E
Assignee
The Perlick Company
IPC
B67d 01/04
B67D 01/12
B67D 01/00
View Original Source