| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure control valve unit having a relief function, simple in arrangement, reliable in operation, easy to miniaturize, and excellent in operability, which is provided with a pressure control valve and a plurality of output ports. SOLUTION: A valve element 20 and a valve base (annular proturusion) 10 that together define a fluid passage of the pressure control valve 1 into a primary passage 19 and secondary passages 7, 12, 37, 25 cooperate with a piston 30 energized by a pressure-regulating spring 40 and function as both a pressure-regulating valve and a cutoff valve of the fluid passage. The valve element 20 cooperates with the tip of a columnar protrusion 38 formed on the piston 30 and opens and closes a relief passage 39 formed in the piston 30. The valve base 10 is formed on the upstream surface of a bulkhead 6 and the downstream surface of the bulkhead 6 continues with a large-diameter cylinder part 13. COPYRIGHT: (C)2006,JPO&NCIPI
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