| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pressure regulating valve normally having a structure blocked from the external and sealed, capable of setting any pressure even when a released pressure is low or high, easily lowering high internal pressure or eliminating an internal load, releasing an internal gas or taking the outside air when the pressure has a specific pressure difference or more at all times, and having an inexpensive structure.SOLUTION: A pressure regulating valve is composed of a pressure regulating valve body (11) having a recessed portion provided with a passing port on its bottom surface and a projection at an inlet-side inner side face, and a passing groove (113) from the passing port to an inner side face at a projection bottom side, and a soft cylinder (12) having the cylindrical shape with a bottom portion, and slidable and compressible on an inner side face of the pressure regulating valve body. When the pressure difference is found between the inside and outside of the pressure regulating valve, the soft cylinder becomes shorter than a length from the bottom surface to the passing groove at the projection bottom side.</p> |
