| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To separate the piping portion of a fire hydrant apparatus and to easily arrange the separated piping portion in a water supply main pipe portion. <P>SOLUTION: This fire hydrant valve unit comprises: a joint part to be joined to a branch pipe from the water supply main pipe; a main valve part where an opening/closing control valve element is arranged in piping leading to the joint part; a pressure regulation part having an automatic pressure regulating valve on the secondary side of the main valve part and having a drain valve protruded downward from the bottom of the body part of the automatic pressure regulating valve; and a piping joint part which is arranged in piping continuous with the secondary chamber of the automatic pressure regulating valve and is to be joined to piping which is connected to a fire extinguishing hose of a fire hydrant body, wherein the joint part, the main valve part, the pressure regulation part, and the piping joint part are integrated. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
