| 摘要 |
PROBLEM TO BE SOLVED: To provide a wafer type orifice trap capable of sealing between a pair of flanges of pipes by a single gasket. SOLUTION: This wafer type orifice trap comprises: a gasket main body 10 sandwiched and fixed between a pair of the flanges 6, 7 of the pipes 4, 5 by a bolt 8 and a nut 9 as outer connection members; a partitioning member 13 having a communication hole 15, and being air-tightly disposed in inner periphery of the gasket main body 10; and an orifice plate 2 including a plurality of orifices 12a, 12b, 12c, 12d, 12e, 12f with different opening areas, and being attached to the partitioning member 13 by opposing a desired orifice 12a to the communication hole 15 of the partitioning member 13. The partitioning member having the communication hole are air-tightly disposed on the inner periphery of the gasket body for sealing a section between the pair of flanges of the pipes. The orifice plate having the plurality of orifices with different opening areas is mounted on the partitioning member so as to make the desired orifice face the communication hole of the partitioning member, thus sealing the section between the pair of flanges of the pipes with a single gasket body. COPYRIGHT: (C)2005,JPO&NCIPI
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