| 摘要 |
The invention concerns a device for pressure drop, and/or closing and sealing a fluid circuit with internal cartridge (3a), (3b), (3c), (3d), (3e) or (3f) and mobile tube (5). The inventive device enable a variable singular pressure drop to be produced on a pipe but also enables, optionally, said pipe which may have a large diameter to be closed and sealed, at high pressure and at high temperature. In fact, the invention, enables, through the displacement of a mobile tube (5), the openings (6a) of (6b) for circulating the fluid conveyed in the pipe to be more or less closed. Said mobile tube (5) may optionally create an autoclave sealing on the closure seat (4) at end of travel. The torque required for maneuvering the device is very low throughout travel. The installation and the maintenance are simplified by using a removable cartridge (3a), (3b), (3c), (3d), (3e) or (3f) immersed in the fluid containing almost all the members required for operating the device. It operates on all types of fluids. |
