Abstract: A compression-type fitting for connecting pipes to hydraulic or pneumatic components or for connecting pipes together, particularly for refrigeration systems, comprising a fitting body provided with a male thread adapted to be engaged by a female thread of a locking nut, an ogive being interposed between the locking nut and the fitting body, a sealing gasket being provided between the ogive and the fitting body, the ogive being adapted to adhere to the external surface of a pipe to be connected; the locking nut has an internal taper such as to deform, during the tightening action, the ogive and produce a constriction thereof on the pipe to be connected.

Abstract: A connection system for pipes in refrigeration plants, comprising an adapter that is adapted to enable the connection of a pipe to a device that is adapted to be used in a refrigeration plant, the adapter being provided with a groove that is adapted to prevent the extraction of the adapter from a connection portion of the device, the groove being adapted to be engaged by a conical locking ring that forms part of the connection portion of the device.

Abstract: The object of the present invention relates to a venting device, which can be connected to a tank containing air and water. The device comprises a first venting path for the air and first intercepting means, set along this, which are suitable for closing the first path. The device also comprises a second venting path for the water and second intercepting means, set along this, which are suitable for opening the second passage to deliver the water. The first intercepting means can be influenced by the water to go from the open configuration to the closed configuration, so that when the air has been vented out, the water reaches a set greater pressure limit, opens the second intercepting means and can be delivered outside.

Abstract: A sealing system with sealing ring for coupling members for connecting pipes to user devices such as pumps, compressors, tanks and the like, by means of a shank that screws into a seat provided on the said user devices, comprises a groove and an annular seal. The groove, which is shaped according to the teaching of international standard ISO UNI 5711-65, is situated in a position adjacent to the shank of the coupling member, at the opposite end from the end of the shank. The groove is able to receive the annular seal designed to be pressed against an abutting wall or a flared portion of the seat of the user device in order to establish the seal. In the original configuration prior to assembly, the sealing ring is of an essentially cylindrical shape, whereas, in the configuration of compression on the groove, it assumes a shape adapted to the profile of the groove, which is generally frustoconical.

Abstract: A device for connecting tubes which comprises a housing 6 having an enclosed area 15 in which the crown of a spring washer 4 is enclosed such that the washer may rotate without translation A tube 20 can fit into the housing to be gripped by elastic teeth 11 which are distributed around the crown of the washer. The tube 20 may thereafter be released from the washer when a release lever 3 is pressed against the teeth 11 to bend them back away from the tube.