| 摘要 |
PURPOSE: A spring-activated safety valve is provided to prevent a chattering effect when opening/closing a valve disc and to reduce the lifting impact of the valve disc. CONSTITUTION: A disc holder(106) is attached to the top of a disc(105). A damping chamber(120) is provided by forming a space between the disc guides(107) and guide the ascent and descent of the disk holder. Vent holes(121) for letting air into and out of the damping chamber are formed in the disc guides. A nozzle comprises a throat with a small diameter in the middle part.
|
