Fire block conduit coupler

Details Fire block conduit coupler Fire block conduit coupler

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 5/04 (2006.01) B28B 23/00 (2006.01) E04B 1/94 (2006.01) E04G 15/06 (2006.01)

Patent

CA 2367641

A coupler which is used in coupling plastic conduit through a separation in a building has plastic end regions for an overlapped accurately positioned sealed coupling with the plastic conduit to each end of the coupler. The plastic end regions are separated by an intermediate region formed by a wall of plastic based intumescent material which defines a fluid flow passage through the coupler. The fluid flow passage wall has a sufficient thickness of the intumescent material to produce a complete blockage of the passage when the coupler is subjected to conditions which cause an intumescing of the intermediate region wall material.

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