Fluid conduit dielectric nipple for push-fit connector

摘要

A fluid conduit dielectric nipple for securement to a tank wall of a fluid holding tank, such as a steel tank of a water heater is described. The fluid conduit dielectric nipple has a tank securement end and a cylindrical conduit connecting end specifically configured for receiving a push-fit quick connector to secure to a water supply line and a hot water return line. The fluid conduit dielectric nipple is fabricated from inexpensive metal, such as plated steel, and has a plastics liner to protect parts thereof intended to be exposed to water to prevent corrosion while providing a leak-proof connection. Accordingly, there is provided an inexpensive dielectric nipple which provides quick connection and disconnection.

主权项

1. A fluid conduit dielelectric nipple for securement to a tank wall, said fluid conduit dielectric nipple comprising a metallic tubular member having a through bore defining an inner surface, a plastics material liner secured to said inner surface of said through bore and extending end-to-end thereof, said metallic tubular member having a tank connecting end and an opposed cylindrical conduit connecting end, said plastics material liner extending over an outer end edge of said cylindrical conduit connecting end, said outer end edge having an outer circumferential recessed ledge, said plastics material liner extending over said recessed ledge to completely isolate an outer end portion of said cylindrical conduit connecting end, said cylindrical conduit connecting end having a predetermined length and provided with a circumferential transverse groove thereabout and disposed a predetermined distance from a free end of said cylindrical conduit connecting end whereby to receive a push fit quick-connector having a grab ring with flexible gripping teeth to engage with said groove to secure a fluid conduit to said cylindrical conduit connecting end in a leak-proof condition.