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ASME A112.14.1-2003 (R2017)

Backwater Valves

This Standard establishes requirements for dimensions, performance requirements, connections, materials and finishes, testing, and marking of backwater valves. Types of backwater valves covered in this Standard include horizontal valves and manual gate valves, terminal backwater valves, combination floor drains with backwater valves, vertical or 90 deg backwater valve and related products.


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American Society of Mechanical Engineers [asme]


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