Automatic device capable of starting the discharge of a liquid or a gas contained in a pressurized system when a variable.If this controlling by means of receivers connected to the device reaches a certain value.

摘要

A mechanism for automatically releasing a pressurized fluid includes a slidable piston to puncture a seal normally closing the fluid outlet, the piston being controlled by the pressure differential between fluids on opposite sides of a cylinder and normally equalized by communication with the pressurized fluid; actuation of the piston results from exposure of one side of the cylinder to atmospheric pressure.