Fluid handling – Processes
Patent
1991-05-16
1992-07-07
Nilson, Robert G.
Fluid handling
Processes
52232, 137 75, 137360, F16K 1738
Patent
active
051274256
ABSTRACT:
An improved firestop fitting (10) which prevents the spread of smoke and fire through a wall (100, 110, 120) between rooms in a building is described. The fitting includes a thermally releasable plug (16) mounted in an extension conduit (14) from a main conduit (12) of the fitting which is activated by a fire to allow the plug to move into and block the main conduit. The fitting is particularly adapted for buildings where plastic pipe is used to carry fluid between rooms.
REFERENCES:
patent: 2128292 (1938-08-01), Finn
patent: 3726050 (1973-04-01), Wise
patent: 4583565 (1986-04-01), Cornwall
patent: 4638829 (1987-01-01), Cornwall
patent: 4724858 (1988-02-01), Cornwall
patent: 4788800 (1988-12-01), Whiteley
McLeod Ian C.
Nilson Robert G.
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