| 摘要 |
PROBLEM TO BE SOLVED: To provide a check valve incorporated with a liquid sealing prevention mechanism for preventing a collection pipe from being in a liquid sealed state, in an LP gas supply system. SOLUTION: The LP gas supply system comprises a plurality of LP gas containers for supplying LP gas, the collection pipe for collecting the gas from the LP gas containers, and an automatic switching adjustor arranged on the collection pipe to supply the LP gas to a consumption side. The check valve incorporated with a liquid sealing prevention mechanism is arranged between the LP gas containers and the collection pipe. When pressure on the collection pipe side exceeds a first set value, the check valve 17 operates to prevent reverse flow to the LP gas container side. A flow passage 27 of a valve element 19 is provided with a through-hole 25 which allows a predetermined amount of the reverse flow when the pressure on the collection pipe side reaches a second set value larger than the first set value. COPYRIGHT: (C)2011,JPO&INPIT
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