Heated cover for pipeline backflow preventer component assembly

Details Heated cover for pipeline backflow preventer component assembly Heated cover for pipeline backflow preventer component assembly

1989-11-13

1991-01-22

Chambers, A. Michael

Fluid handling

With heating or cooling of the system

With electric heating element

137375, 137550, 137855, F16K 4900

Patent

active

RE0335231

ABSTRACT:
A heated, insulated cover for a portion of a pipeline with valve and backflow preventer components exposed to the atmosphere, the cover being sectionalized so as to be asemblable around the valve components, with hand manipulated clamps to hold the cover together, an electric heating element inside the cover to keep it above freezing temperature, drain openings in the cover at ground level to let any water drain out of the cover, doors in the cover to permit inspection and testing of the components when the cover is in place.

REFERENCES:
patent: 1108840 (1914-08-01), Franke
patent: 2236477 (1941-03-01), Fuchs
patent: 3724491 (1973-04-01), Knudsen et al.
patent: 4207918 (1980-06-01), Burns et al.
patent: 4259981 (1981-04-01), Busse
patent: 4558206 (1985-12-01), Ball

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