| 摘要 |
PROBLEM TO BE SOLVED: To suitably supply pressurized gas to a low-pressure side pipeline from a high-pressure side pipeline through a partitioning valve, without using a bypass line, an equalizer valve and a multistage orifice.SOLUTION: A valve opening restriction mechanism is a mechanism for restricting the opening of a valve to a predetermined opening, and has a plate 10 and a piston 21 moving from a first main surface 101 of the plate 10 toward a distal direction. The piston 21 can transit between a distal forward position and a retreat position. At the distal forward position, a rotary lever 50 for adjusting the opening of the valve contacts with the piston 21, and the position of the lever 50 is restricted at the predetermined opening.SELECTED DRAWING: Figure 1 |
