| 摘要 |
PROBLEM TO BE SOLVED: To provide a constant flow rate valve capable of easily adjusting a flow rate with simple operation while keeping in a pipeline connection state.SOLUTION: An external adjustment type constant flow rate valve 1 has a valve body 10 to which a pipeline member 80 on an inflow side is attached, and a needle valve member 20 is inserted into the valve body 10 in a slidable manner. A valve seat member 40 screwed into the valve body 10 has a valve orifice part 42, and a needle valve part 22 of the needle valve member 20 is inserted into the valve seat member. By loosening a first nut 70 and a second nut 72 and changing a distance Lbetween the valve seat member 40 and the valve body 10, a gap C1 is changed to adjust a flow rate. |
