| 摘要 |
<p>A safety relief valve (10) comprises a body (12) having an inlet (14) and outlet (16). A valve seat member (18) defines a valve seat (20) and is externally threaded to receive an adjusting ring (24). The adjusting ring has one end (44) located to provide an orifice (46) which will control the area governing the rate of closure or "blow down" of the valve and a much larger peripheral surface (48) which cooperates with a valve member carrier (26) to provide an orifice (50) that governs the force applied to the valve carrier (26) and valve member (28) to lift the valve which has been previously "cracked".</p> |
