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; an orifice plate 2 including a plurality of orifices 12a, 12b, 12c, 12d, 12e, 12f with different opening areas, and being air-tightly disposed in inner periphery of the gasket main body 10; and a partitioning member 13 having a communication hole 15, and being attached to the orifice plate 2 by opposing the communication hole15 to a desired orifice 12a of the orifice plate 2. The orifice plate having the plurality of orifices with the different opening areas are air-tightly disposed on the inner periphery of the gasket body for sealing a section between the pair of flanges 6, 7 of the pipes. The partitioning member having the communication hole is mounted on the orifice plate so as to make the communication hole face the desired orifice of the orifice plate, 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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