| 摘要 |
<p>PURPOSE: To obtain a spool fluid valve with its size and the length of an end portion sharply reduced by forming a recess pocket for receiving seal portions of a spool extending over the end portion of an opening. CONSTITUTION: A recess pocket 174 of an end portion 171 has an opening 175. The opening 175 is disposed concentrically with an opening 160, and the diameter of the opening 175 is substantially the same as that of the opening 160. The depth of the opening 175 is overlain between a bottom 176 and an annular face portion 177. The opening 175 accepts a seal portion 167 in sealing state by the contact between a shoulder 169 and the bottom 176. Since the shoulder 169 abuts on the bottom 176, a spool 151 and the seal portions 165 to 167 are positioned corresponding to the openings 160, 159, 161, 163, 170 and 172.</p> |
