| 摘要 |
<p>Disclosed is a water supply valve having a backflow prevention function, in which backpressure is generated by water hammer occurring when the valve is rapidly open and closed or when pressure in an apparatus such as a boiler in which circulating water is supplied is higher than water pressure, thereby preventing a backflow of water in a circulation pipe. The water supply valve includes: a pipe assembly 20 forming a fluid chamber 21 with an upper portion opened, and having an inlet pipe 22 which extends through a side of the fluid chamber 21 and is bent upward, and an outlet pipe 23 connected to the other side of the fluid chamber 21; a bellows mounted on the upper portion of the fluid chamber of the pipe assembly 20 and formed with an outlet hole 31 at a portion of the bellows, for opening and closing an opening of the inlet pipe 22; and a cover movably coupled to the fluid chamber 21 to cover the bellows 30, and having a spring recess 42 in which a buffer spring 41 is inserted so as to compress the bellows.</p> |
