| http://www.w3.org/ns/prov#value | - When the valve body 34 moves to an extreme position toward the one end of the axial bore 33 i.e. occupies a position illustrated in FIG. 8(a), the first passage 38 is brought into communication with the hydraulic pressure chamber 28 through the first communication bore 37, the port 36 and the central bore 35 both formed in the pilot valve 31, and the second communications bore 39 in the mentioned
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