backwater valve


Also found in: Acronyms.

backwater valve

[′bak‚wȯd·ər ‚valv]
(engineering)
A type of check valve in a drainage pipe; reversal of flow causes the valve to close, thereby cutting off flow. Also known as backflow valve.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

backwater valve, backflow valve

A type of check valve in a drainage pipe; reversal of flow causes the valve to close, thereby cutting off flow.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Avoid spending money on a solution that does not keep the water out and look for products that are tested and certified by entities like the National Flood Barrier Testing and Certification Program, which tests temporary flood barriers, closure devices, backwater valves and flood mitigation pumps.
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