Patent ID: 7458613

Claim:
A fire sprinkler fitting comprising: (a) a cylindrical polymeric body defining a bore with a center line, an open bore end, the bore having a distal portion adjacent to the open bore end and a proximal portion spaced apart from the open bore end, the proximal portion defining a shoulder disposed in a plane perpendicular to the center line; (b) an insert having an outer end and an inner end, the inner end being disposed within the proximal portion of the bore such that the outer end protrudes beyond the open bore end, the outer end having internal threads which are sized and dimensioned to accept and retain a fire sprinkler therein, the inner end having a circumferential flange which abuts and is retained by the shoulder defined within the proximal portion of the bore in the cylindrical body, the insert having a melting point greater than that of the polymeric body; and (c) a metal collar disposed tightly around the polymeric body such that the collar extends around the distal bore portion, but not around the proximal bore portion; whereby the insert is rotatable within the polymeric body.