Patent ID: 8733100

Claim:
A valve control device ( 1 ) comprising: a housing ( 2 ) which has a first vacuum chamber ( 3 ) and a first atmospheric pressure chamber ( 4 ), which first vacuum chamber ( 3 ) and first atmospheric pressure chamber ( 4 ) are separated from one another in a gas-tight fashion by a spring-loaded first diaphragm ( 5 ); a regulating rod ( 6 ) for regulating the position of a shut-off element of a bypass valve ( 7 ), with the regulating rod ( 6 ) being operatively connected to the first diaphragm ( 5 ), a second vacuum chamber ( 8 ) in fluid communication with the first vacuum chamber ( 3 ), and a second spring-loaded diaphragm ( 9 ) which is arranged in the second vacuum chamber ( 8 ), with the regulating rod ( 6 ) being fastened to the second diaphragm ( 9 ).