| 摘要 |
PCT No. PCT/EP94/02486 Sec. 371 Date Feb. 2, 1996 Sec. 102(e) Date Feb. 2, 1996 PCT Filed Jul. 28, 1994 PCT Pub. No. WO95/04573 PCT Pub. Date Feb. 16, 1995Typically, for automatically dosing shutoff valves, a valve closing body is held in the open position by fixation with soft solder and can be moved into the closed position by means of a spring action. The disadvantage is that it can only be used on small valves and is restricted to the direct influence of temperature on the shut-off valve itself. Hence, the invention provides improvement using a reaction line and a hollow body to form a closed system. The reaction line which is thermo-sensitive all over its length can be laid at any desired distance from the shut-off device so that a fire occurring at a distance from the shut-off device triggers the closing action. The reaction line can, for example, be arranged in a metering and regulating station so that it stretches over the entire station. The advantage of the design as a reaction line is that the reaction time with regard to fire fighting is reduced to a minimum.
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