| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pressure-reducing valve in which the dimensions in the radial direction is reduced, and capable of reducing the change of a secondary pressure accompanied with the change of a primary pressure. SOLUTION: A piston 22 is formed in a housing 21 which is formed with a primary port 28 and a secondary port 30, and a primary pressure chamber 64 with primary pressure P1 and secondary pressure chamber 80 with secondary pressure P2 connected via an orifice 63 are formed, and the primary pressure P1 is made to act to one axial direction X1 and the secondary pressure P2 is made to act to the other axial direction X2 in the piston 22, and spring force in one axial direction X1 is applied to the piston 22 by a spring member 23. In addition, a rod 24 is inserted into the piston 22, and a back pressure chamber 55 held by the primary pressure P1 is formed, and the primary pressure P1 is made to act to the other axial direction X2 in the piston 22 so that the primary pressure P1 made to act from the axial direction to the piston 22 can be balanced.</p> |
