| 摘要 |
A body 1 and a cover 2 form a valve casing. An inlet 5, a valve chamber 4, and an outlet 7 are formed in the valve casing. A valve seat member 9 is attached to the lower portion of the valve chamber 4. A discharge passage 8 that communicates the valve chamber 4 with the outlet 7 is formed to the valve seat member 9. A float 11 that is moved away from and seated on the valve seat member 9 to open and close the discharge passage 8 is disposed in the valve chamber 4. An operation member 14 whose tip end is disposed in the discharge passage 8 is provided to be externally operable in the forward and backward directions. A valve member 16 that communicates between the periphery anterior to and the periphery posterior to the middle portion of the operation member 14 when the operation member 14 is in the advanced position and that blocks the periphery anterior to and the periphery posterior to the middle portion of the operation member 14 from one another when the operation member 14 is in the most retracted position is provided to the middle portion of the operation member 14. A blow passage 17 is formed to communicate the periphery posterior to the valve member 16 of the operation member 14 with the outside distinct from the outlet 7. |
