A VALVE

摘要

The invention provides a valve (10) for automatically controlling fluid flow in response to the tilting of the valve (10) from a first condition to a second condition. The valve (10) includes a valve housing (12) defining a passage (14) for fluid flow through the valve (10) from a valve inlet (16) to a valve outlet (20), and a valve closure (26) which is movable between a closed condition in which it prevents fluid flow through the valve passage (14) and an open condition in which it allows fluid flow through the valve passage (14). The valve (10) also includes a safety device (34) for effecting displacement of the valve closure (26) into the closed condition when the valve (10) is tilted from the first condition to the second condition. The safety device (34) includes a mass (36) which is automatically displaceable, under the effect of gravity, when the valve (10) is tilted towards or into the second condition, and the safety device (34) is arranged so that the automatic displacement of the mass (36) causes or allows the valve closure (26) to be displaced into the closed condition.