AUTOMATIC SHUTOFF VALVE Russian patent published in 2014 - IPC F16K7/17 F16K21/04 F16K17/04 

FIELD: machine building.

SUBSTANCE: automatic shutoff valve is used to shutoff gas in case of pressure drop in gas pipeline below the minimum level. Automatic shutoff valve, the body of which with input and output nozzles has the stop valve made as a body-integrated spring-loaded diaphragm with locking device, interacting with a seat, the through passage of which connects under-diaphragm hollow with the input choke. The valve is equipped with the spring-loaded turn-and-thrust handle installed between the diaphragm with a valve on their shared axle on the one side and a cap, covering the diaphragm, on the other side, with the possibility to turn around this axis and to occur in thrust between them, the output choke is connected with under-diaphragm hollow directly.

EFFECT: perfected design.

3 dwg