What does the National Standard Plumbing Code require in buildings that have backwater valves installed?

What will be an ideal response?


The National Standard Plumbing Code requires a building that has backwater valves
installed to have a posted warning including the backwater valves’ locations.

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A new emerging crop, lesquerella, is sought after by the ____ industry

a. cosmetic c. pharmaceutical b. food d. scientific research

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If the angle of the lips is less than 118 degrees, a bit will cut too fast

Indicate whether the statement is true or false.

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When charging systems with zeotropic refrigerants, such as R410A, the refrigerant must leave the refrigerant cylinder:

A) As a liquid-vapor mixture. B) As a liquid. C) As a vapor. D) Under a pressure of at least 100 psig.

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What is the purpose of a flow check valve?

What will be an ideal response?

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