| 摘要 |
PROBLEM TO BE SOLVED: To provide technology allowing prevention of a flow of corrosion protection current into a pressure adjustment system.SOLUTION: In this pressure adjustment system, a pilot valve 4 has a pressure setting spring G2 allowing freely changeable setting of a drive pressure by adjustment of a spring load, and includes a pilot pressure adjustment mechanism S having a pressure adjustment screw positioned in an expansion/contraction direction of the pressure setting spring G2 by rotation of a driven rotary shaft to freely adjust the spring load. An adjustment device 100 includes a driving rotary shaft allowing adjustment of a rotation position of the driven rotary shaft in a connection state in which the driving rotary shaft is connected to the driven rotary shaft, and the driven rotary shaft and the driving rotary shaft are electrically insulated in the connection state in which the driven rotary shaft and the driving rotary shaft are connected. |
