| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermally-actuated steam trap capable of preventing steam leakage over a long time. SOLUTION: An inlet 2, a valve chamber 4, and an outlet 3 are formed by a casing composed of a main body 1 and a lid member 5. A valve seat member 7 having a leading-out passage 6 is arranged between the valve chamber 4 and the outlet. A temperature control element 8 composed of a wall member 10, a diaphragm member 13, an expansion medium 12 sealed between both of them, and a valve member 15 connected with a leading-out passage 6 side of the diaphragm member 13 is arranged in the valve chamber 4. One end of bellows 16 is fixed to a valve member 15 side of the valve seat member 7, and an annular movable valve seat 17 is fixed to the other end of the bellows 16 to displace and tilt freely in the axial direction. The valve member 15 leaves and is seated on the movable valve seat 17 by displacement of the diaphragm member 13 due to expansion and contraction of the swelling medium 12. COPYRIGHT: (C)2006,JPO&NCIPI
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