A _______________ valve utilizes a metal gate (disc)that slides vertically to open and close the valve.
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Q10: Every residential dwelling is required by code
Q11: To ensure the water drains from the
Q12: The _ of the piping system is
Q13: Codes typically allow the water service piping
Q14: A backflow-prevention device known as a _
Q16: What is the purpose of an isolation
Q17: What is the purpose of pipe insulation?
Q18: A _ is a valve design that
Q19: The most common classifications of residential valves
Q20: All hose bibbs are protected with a
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