主权项 |
1. A float type drain trap in which
an inlet, a valve chamber, and an outlet are formed in a valve casing, a valve seat member is attached to a lower portion of the valve chamber, a discharge passage that communicate the valve chamber with the outlet is formed to the valve seat member, a float that is moved away from and seated on the valve seat member to open and close the discharge passage is disposed in the valve chamber, an operation member whose tip end is disposed in the discharge passage is provided to be externally operable in the forward and backward directions, a valve member that communicates between a periphery anterior to and a periphery posterior to a middle portion of the operation member when the operation member is in an advanced position and that blocks the periphery anterior to and the periphery posterior to the middle portion of the operation member from one another when the operation member is in a most retracted position is provided to the middle portion of the operation member, and a blow passage that communicates the periphery posterior to the valve member of the operation member with an outside distinct from the outlet. |