| 摘要 |
<p>PURPOSE:To enhance the durability by allowing water which has been rectified by a check-valve to flow into a ball-like valve. CONSTITUTION:A check-valve 43 is arranged on the flow axis of fluid, and a ball valve 45 is arranged on the part of the flow axis which is folded back by about an angle of 90deg., downstream of the check-valve 43, at a height substantially the same as that of the latter. Accordingly, water having flown in a valve seat 35 is folded back by a substantially right angle by means of the upper and lower surfaces of the check valve 43 and the inner surface of a body 37 on the check valve 43 side, and is led into the ball valve 45 side. Thus, the force acting upon the ball-like valve 45 becomes uniform when a discharge port 36 is blocked by the ball valve 45 so that no useless force is exerted thereto, and accordingly, the durability of the ball valve 45 can be enhanced. Further, since the ball valve and the check valve are held substantially at the same height, the height of the discharge port of the flow passage, measured from the ground becomes lower, and accordingly, a reaction force during water discharge can be decreased.</p> |
