| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pinch valve normally operating, without having a fixing on an inner circumferential surface of a pipe. <P>SOLUTION: A pinch valve includes: a valve body BD; a pipe 1 arranged in the valve body BD; a pinching presser 22 pressing the pipe 1 in its radial direction and opening and closing a flow passage; and a driver 100 driving the pinching presser 22. The pipe 1 has a cylindrical inner layer 2, and a cylindrical outer layer 3 formed to be closely attached to the outer circumferential surface of the inner layer 2. The inner and outer layers 2 and 3 are made of different materials from each other, and the 100% modulus value of the outer layer 3 is larger than that of the inner layer 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
