| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure relief valve which enables manufacturing at a low cost, stabilizing pressure according to opening/closing of the valve, and making the valve capable of ensuring the stability of operation. SOLUTION: This pressure relief valve, aimed at adopting a ball valve 23 as a valve body and using of a ball 26 for sealing as a retainer of a valve spring 25 to have a spring seat 24 seating the valve spring 25, a valve seat 22 mounted in a valve holder 21, and a valve body lifted from the valve seat 22 against the energizing force of the valve spring 25 by a pressure of a high- pressure fluid, is characterized by adopting the ball valve 23 as the valve body, closing a low pressure part side end part 21B of the valve holder 21 by the ball 26 for sealing to make energizing force of the valve spring 25 adjustable, and arranging the ball valve 23 between the spring seat 24 and the valve seat 22. |
