Patent ID: 8640776

Claim:
Device for injection and stimulation of fluids in a process fluid, typically an offshore well bore, typically installed on Christmas trees or wellheads, for petroleum production and gas injection/gas lift system where the device comprises an outer hollow housing ( 1 ) and an internal body ( 2 ) moveable within the outer housing ( 1 ), comprising an internal bore ( 3 ), which in a closed position is closed with a seal system between the outer housing ( 1 ) and the internal body ( 2 ), the internal body ( 2 ) being operated by pressure differential across the internal body ( 2 ), wherein the outer housing ( 1 ) comprises a stop surface ( 20 ) and the internal body ( 2 ) comprises a stop surface ( 21 ), a chamber ( 52 ) being formed between the outer housing ( 1 ), the internal body ( 2 ) and the stop surfaces ( 20 , 21 ), where the internal body ( 2 ) furthermore comprises at least one slot ( 4 ) forming outlets of the internal bore ( 3 ), wherein the at least one slot ( 4 ) in an open position of the device is positioned at least partly outside the outer housing ( 1 ) leading out to a surrounding fluid, and further wherein the outer housing ( 1 ) comprises a through going opening ( 56 ) for allowing hydraulic fluid to be added to the device for operation of the device between the open and the closed position.