Backflow preventer apparatus and method with integration of shut-off valves
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 26, 2002
Grant Date -
N/A
app pub date -
Apr 27, 2000
filing date -
Apr 27, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Backflow prevention is provided in connection with a device having one or more shut-off valves integrated with a double-check-valve backflow prevention device and/or housing. Preferably, a single housing encompasses two backflow preventer check valves, and upstream and downstream shut-off valves. Typically, end users cannot readily remove the shut-off valves (and/or their housing) from the backflow preventer check valves (and/or their housing). No flange or other connection between shut-off valves and backflow preventer check valves (and/or their housing) is required, reducing size, weight and labor requirements. The system can substantially reduce or eliminate potential for installation of double-check-valve backflow preventer devices without shut-off valves.
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