Firestop stack fitting

Details Firestop stack fitting Firestop stack fitting

1987-08-05

1988-02-16

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

137362, 285 64, 220 89B, E03D 100

Patent

active

047248580

ABSTRACT:
An improved firestop fitting with a flammable main conduit (11) and extension conduit (12) supporting a non-flammable sleeve (14) and plug (16). The plug lodges into the sleeve when a harness (17) is melted by heat from a fire below the floor (100 or 101) in which the fitting is mounted which passes into the conduits. The fitting is relatively light and inexpensive.

REFERENCES:
patent: 3678634 (1972-07-01), Wise
patent: 3726050 (1973-04-01), Wise
patent: 4583565 (1986-04-01), Cornwall
patent: 4623170 (1986-11-01), Cornwall

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