| 摘要 |
PROBLEM TO BE SOLVED: To provide a disc-type steam trap capable of increasing an opening of an outlet passage when bimetal lifts up a valve disc to separate the same from inner and outer ring valve seats to open a valve at a low temperature.SOLUTION: A bimetal accommodation recessed portion 12 is formed on an annular groove 8 at a side in the vicinity of an outlet passage formed from a part of the annular groove 8 between inner and outer ring valve seats 6, 7, and bimetal 13 is disposed in the bimetal accommodation recessed portion 12. At a low temperature, the bimetal 13 lifts up the side in the vicinity of the outlet passage of a valve disc 11, so that the valve disc is separated from the inner and outer ring valve seats 6, 7 and a valve is opened, and at a high temperature, the bimetal 13 does not interfere with the valve disc 11. As the bimetal 13 lifts up the side in the vicinity of the outlet passage of the valve disc 11, the valve disc is separated from the inner and outer ring valve seats 6, 7 to open the valve at the low temperature, thus an opening of the outlet passage is increased, and air binding can be eliminated in a short time. |
