Patent ID: 8430121

Claim:
A gas flow monitor for automatically shutting off downstream gas pipes when a defined maximum flow is exceeded, said monitor comprising: a gas-tight housing ( 1 ) having an inlet side and defining an inner valve seat ( 5 ), a sleeve ( 6 ) connected to the housing ( 1 ), a closing element ( 9 ) displaceable within the housing ( 1 ), said closing element ( 9 ) having a pin ( 7 ) which guides the closing element ( 9 ) and is in turn guided in a longitudinally displaceable manner in the sleeve ( 6 ), a closing spring ( 11 ) supported on the housing ( 1 ) and the closing element ( 9 ) such that the closing element is held in the open position against a flow direction by the force of the closing spring ( 11 ), and a tubular insert ( 13 ) connected to the inlet side of the housing ( 1 ) and defining an inner contour ( 14 ) which determines a flow profile up to the valve seat ( 5 ), the inner contour ( 14 ) including an upstream end and a downstream end and tapering from the upstream end to the downstream end.