| 摘要 |
PROBLEM TO BE SOLVED: To provide a marine spool valve easy to manufacture in connection with the marine spool valve for controlling fluid devices used in a ship. SOLUTION: A pump port 18 connected with a pump is in communication with a spool hole 10, a fuel supply actuator port 14 is in communication with the spool hole 10, tank ports 26a, 26b connected with a tank are in communication with the spool hole 10, and opposite ends of a spool 28 inserted in the spool hole 10 are pressed by pilot portions 40a, 40b. The spool 28 is urged by a neutral mechanism 32b to a neutral position where the port 14 and the port 26 communicate with each other. Pilot spools 50a, 50b are provided for supplying pressure oil to and discharging it from the pilot portions 40a, 40b. The spool 50a is moved to a discharge position to discharge the pressure oil from the pilot portion 40a and the spool 28 is switched over in a state connected with the port 18 and the port 14 against urging force of the neutral mechanism 32a by the pressure oil of the pilot portion 40b. COPYRIGHT: (C)2005,JPO&NCIPI
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