| 摘要 |
A pressure gauge includes a pressure measurement-display portion (11) for measuring a pressure and displaying the pressure by a pointer, a fitting portion (21) extending from the pressure measurement-display portion and having a pressure detection passage (22) formed therein, and an orifice member (60) arranged in the pressure detection passage and having an orifice (62) formed therein. This pressure gauge prevents breakage of an internal mechanism of the pressure gauge owing to a pressure change phenomenon. Incidentally, an orifice may be formed at a part of the pressure detection passage in place of the orifice member. A pressure gauge assembly (1) includes a pressure gauge (10) having a fitting portion having a pressure detection passage formed therein, and a joint (30, 40) for connecting the fitting portion of the pressure gauge to a conduit line, wherein an orifice (49) is formed at a part of an internal passage of the joint. |
