Emergency gas shut-off unit mounted on gas pressure adjusting unit

摘要

The emergency shut-off unit for escaping gas is comprised of a cylinder and a valve piston that runs through the cylinder, and the cylinder is screwed to a thread hole formed on the bottom wall on straight line extension of a projecting shaft of a diaphragm of a gas pressure adjusting unit, and the valve piston is placed inside of the cylinder at its tip portion and at the other end side a pin is detachably inserted into a location of the piston protruding from the cylinder so as to be retained, and when the pin is pulled out from the valve piston, the tip of the valve piston jumps off resiliently from the cylinder and the projecting shaft of the diaphragm is pushed up by the junping off of the valve piston and a valve body is made to close the nozzle portion of a gas supply passage of the gas pressure adjusting unit.