| 摘要 |
PROBLEM TO BE SOLVED: To adjust a set pressure without disassembling a relief valve. SOLUTION: In this relief valve 1, a guide hole 19b for a screw driver S is provided through in a lid body 19 in conformation to the recessed part 18c for the screw driver S provided on the upper surface of a regulating screw 18. Accordingly, the tip of the screw driver S is inserted from the guide hole 19b and fitted to the recessed part 18c, and the screw driver S is rotated, whereby the regulating screw 18 is vertically moved without removing the lid body 19 or the like.
|
