|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/271 ; 251/209 ; 251/315.16 ; 251/127|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 22 인용 특허 : 10|
A volume control insert for a ball valve that is attachable in a fluid passage of the ball valve to provide a predetermined flow condition therethrough. The insert has a convex shape corresponding to an outer surface of a valving member seated in the ball valve, and has a connector disposed on its periphery to attach the insert across the fluid passage. The insert has an elongate slot through it, such as an oblong or parabolic shaped opening, adapted to provide the predetermined flow condition. A plurality of such inserts may be furnished with a ball val...
[ What is claimed is:] [9.] A ball valve for providing a plurality of predetermined flow conditions therethrough, said ball valve comprising:a valve housing having upstream and downstream passages extending therethrough, said upstream and downstream passages extending into and out of a valve seat within said valve housing, thereby defining a longitudinal axis through said valve seat;a valving member rotatably mounted within said valve seat, said valving member having a bore extending therethrough, said bore being alignable with said longitudinal axis, sa...