Trap fitting assembly for mounting in flammable floors

Details Trap fitting assembly for mounting in flammable floors Trap fitting assembly for mounting in flammable floors

F - Mech Eng,Light,Heat,Weapons

16

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F16L 59/00 (2006.01) A62C 4/00 (2006.01) E03C 1/20 (2006.01)

Patent

CA 2090774

ABSTRACT OF THE DISCLOSURE An improved trap fitting assembly (10) which prevents the spread of smoke and fire through a floor (100) and ceiling (104) supported by a joist (102) in a building is described. The fitting is preferably adapted for mounting in a tub box (12) and uses a flammable T-connector (24) for draining a tub (106) through an overflow pipe (22) and a drain pipe (20) connected to a tub drain (42). The T-connector is mounted inside of a non-flammable threaded nipple (16) which is mounted in an opening (14) in the tub box by jam nut (26) and a ring gasket (28). A non-flammable J-pipe (30), filled with water to a level L-L, threads onto a lower extension (16b) of the nipple and prevents smoke and fire from spreading through the fitting assembly.

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