| 摘要 |
PROBLEM TO BE SOLVED: To perform a pressure control function when discharging water without a valve body and a valve seat being fixed when arranging a self-pressure control valve closer to a primary side than a hydrant valve. SOLUTION: The hydrant apparatus has a hydrant valve connected to a water supply, a fire-extinguisher hose which is connected to the hydrant valve and has a fire-extinguisher nozzle at a distal end, and a self-pressure control valve for controlling discharge pressure from the fire-extinguisher nozzle. The self-pressure control valve is disposed on a primary side of the fire-extinguisher plug and has a valve body responding to a secondary pressure of the self-pressure control valve. The valve body is formed so that it has a gap against the valve seat where the valve body is seated in a closure state. COPYRIGHT: (C)2009,JPO&INPIT
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