|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/489 ; 137/490 ; 137/62564 ; 251/26|
|발명자 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 0|
An isolation automatic control valve is formed by disposing an isolation valve of very simple structure in the inlet and outlet passages of a main valve or in the passage joining a main valve and its pilot valve, which not only controls normal operation during automatic controlling but also can isolate the main valve from the pilot valve for on-line maintenance while simultaneously controlling operation of the main valve manually or automatically. The isolation valve includes a throttling function to enable the main valve to acquire various control param...
An isolation automatic control valve comprising an automatic main valve and a pilot valve, characterized in that said isolation automatic control valve further comprises an isolation valve; said isolation valve is disposed on a passage connecting said main valve and said pilot valve; said isolation valve comprises a valve body and a valve core; the circumference of said valve core precisely fits a bore formed in said valve body and includes channels formed therein; said valve core is moveable within said bore of said valve body; said channels, when said ...