VALVE ASSEMBLY AND GAS METER, COMPRISING NAMED VALVE ASSEMBLY Russian patent published in 2014 - IPC F16K31/128 

FIELD: machine building.

SUBSTANCE: valve assembly intended for regulation of combustion gas supply, in particular for delivery via gas meter device is designed. The valve assembly comprises servo valve with the first valve seat, first gate with a regulating diaphragm. The controlling camera is intended for servo valve control. One side of the diaphragm is effected by the pressure prevailing in the named camera. Another side is effected by the pressure prevailing downstream the first valve seat, in the zone of discharge section of the main line. Meanwhile the controlling camera is connected with the discharge section via the second valve seat interacting with the second gate. Driving rod interacts in a working position with the first and second gates. Actuator interacts with driving rod for moving of gates. Driving rod is fixed to the first gate with the possibility of restricted offset with the reference to it, with the pre-set gap. Meanwhile the rod can be displaced at actuating of the actuator without collision with the first gate along some part of the stroke of the named gate during lift, and also with ensuring of counteraction to elastic effect of return device. Gas meter device is described as well.

EFFECT: group of the inventions is aimed at avoidance of "sticking" of the gate on the valve seat, improvement of the device operation.

14 cl, 5 dwg