| 摘要 |
<p>A multi-position choke-valve assembly comprises: a) a valve body (15) defining an interior chamber (20) and inlet (24) and outlet (26) fluid flow ports communicable with that chamber, b) a tubular carrier (19) received in the chamber to be axially removable therefrom, c) a tubular nozzle (27) retained in the carrier, d) a flow control sleeve (36) axially movable in the carrier relative to the nozzle and in telescopic relation therewith to control fluid flow from the inlet flow port to the outlet port via the nozzle wherein fluid flow energy is dissipated, e) and mechanism for so moving the flow control sleeve. The referenced mechanism may include a linear to rotary actuator. </p> |
