| 摘要 |
A double check valve type reverse-flowing breaker is provided to intercept the reverse flowing of a fluid completely by using first and second check valves of different kinds even if reverse flowing of the fluid occurs. A double check valve type reverse-flowing breaker is installed to intercept the reverse-flowing of accumulated fire extinguishing water, and includes a swing type check valve(210) and a disk type check valve(220). The swing type check valve is installed on a part of a fire extinguishing branch pipe(110) divided from an integrated main pipe, and supplies fluid in one direction only by selectively opening and closing a channel by the pivoting of a disk. The disk shape check valve supplies the fluid in one direction only by selectively opening and closing the channel by the reciprocating motion of a disk.
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