| 摘要 |
<p>The invention relates to a pressure relief valve to be installed between an upstream and downstream pipe for the flow of a fluid, including: a body (2) in which a chamber (4) having a peripheral sidewall (6) is provided and which includes upstream and downstream tips (8, 9) having upstream and downstream openings (17, 18) leading into the chamber (4) through the sidewall (6); a liner (20) installed in the chamber (4), including a separation wall (26) adjacent to or in contact with a peripheral portion of the sidewall (6) of the chamber (4) and extending between the upstream and downstream openings (17, 18), the liner having a communication passage (31) extending through the separation wall (26); and a piston (33) slidably supported by said liner (20) and including an actuating portion (35) subjected to the downstream pressure against a return spring (52), and a plugging portion (36) capable of closing said communication passage (31) when the downstream pressure reaches a maximum pressure limit (Pmax), the separation wall (26) being arranged obliquely relative to the axis (Y) of the peripheral sidewall (6) of the chamber (4).</p> |
