| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a three-way cock, capable of reducing remaining of liquid chemical on a switching passage in a columnar body, and restricting dosage error of the liquid chemical. <P>SOLUTION: In the switching passage 8 provided in the columnar body 7, a delivery tube 5, a first introducing tube 3, and a second introducing tube 4 are communicated with one another. With this state being held, the switching passage is composed of an L-shaped through-hole 8a penetrating the columnar body 7 while bent in an L-shape to make the first introducing tube 3 and the second introducing tube 4 communicate with each other, and an outer circumferential groove 8b extended from one end of the L-shaped through-hole 8a on the side where it is communicated with the second introducing tube 4 along a circumferential surface of the columnar body 7 toward the delivery tube 5 to be communicated with the delivery tube 5. <P>COPYRIGHT: (C)2009,JPO&INPIT |
