3794288 is referenced by 12 patents and cites 4 patents.

Butterfly valve for ducts of hydroelectric power stations, with a web in said duct, extending transversely of said duct and being rigidly secured to said duct, and a flap pivotably mounted on said web; a drive mechanism comprising a servo-motor and first connecting means between said flap and said servomotor and second connecting means between said servo-motor and said web; said connecting means being arranged in a plane crossing said duct and being perpendicular to the pivoting axis of said flap.

Title
Butterfly valve
Application Number
05/339,308
Publication Number
3794288
Application Date
March 8, 1973
Publication Date
February 26, 1974
Inventor
Schmalzi Alfred
Dolder Guido
Agent
Dodge Austin P
Ostmann Robert A
Assignee
Escher Wyss
IPC
F16k 31/143
F16K 01/22
View Original Source