| 摘要 |
<p>The safety device has at least one pressure regulator (5) between a pressurized gas source (2) and a distribution line, preceded by a pressure limiting device (4) with 2 parallel paths (41,42), each containing 2 pressure-limiting valves connected in series opposition, e.g. spring-loaded non-return valves (43,44,45,46) which open at a defined pressure limit.</p> |
