Abstract: Process for the introduction of liquid into a continuous process for the gas-phase polymerization of a olefin monomer and one or more other alpha-olefins in a fluidized-bed reactor, the liquid being introduced by at least one nozzle having a feed pipe and a sleeve sliding inside and at the end of the pipe, the position of the said sleeve along the feed pipe being determined by the pressure of the feed liquid and the return force of a preloaded spring, the spring having one end fixed to the sleeve and the other end to the feed pipe, the sleeve being provided with one or more recesses along its surface for sliding with the feed pipe, the recesses emerging in a groove around the circumference of the sleeve and below a circular stop integral with the same sleeve, the stop resting, when the nozzle is not in use, on a rim of the end of the feed pipe, the rim and the circular stop of the sleeve each being provided with a bearing surface, the contact area of which is minimized to allow good sealing.

Abstract: Process for the introduction of liquid into a continuous process for the gas-phase polymerisation of an olefin monomer and one or more other alpha-olefins in a fluidised-bed reactor, characterised in that the liquid is introduced by means of at least one nozzle comprising a feed pipe (1) and a sleeve (2) sliding inside and at the end of the said pipe, the position of the said sleeve along the feed pipe being determined by the pressure of the feed liquid (3) and the return force of a preloaded spring (4) the said spring having one end fixed to the sleeve and the other end to the feed pipe, the sleeve being provided with one or more recesses (10) along its surface for sliding with the feed pipe, the said recesses emerging in a groove (11) around the circumference of the sleeve and below a circular stop (8) integral with the same sleeve, the said stop resting, when the nozzle is not in use, on a rim (9) of the end of the feed pipe, the said rim and the circular stop of the sleeve each being provided with a beari

Abstract: A delivery conduit operative through a valve member directs fluid selectively from the shower conduit to a storage tank in operative communication with a commode, wherein the storage tank permits selective use of water from a primary conduit or from the delivery conduit for the utilization of water therefrom.