Monthly Plumbing Quiz: Pipes, Valves and Fittings

Is there anything more foundational to the plumbing trade than sending water through pipes just the way you want it to go? How much do you know about pipes, valves and fittings? Take our quiz and find out!

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1. As the Schedule of a pipe increases –

Its O.D. increases

Its weight decreases

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Its O.D. decreases

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2. Plastic and copper or copper alloy piping penetrating framing members to within 1” of the exposed framing shall be protected by steel nail plates that are not less than –

14 gauge in thickness

16 gauge in thickness

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20 gauge in thickness

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3. Mechanical pressing systems are more popular than ever for joining pipe. There are press connection systems available for use with:

PEX pipe

Copper pipe

Black iron pipe

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4. For potable water systems, each pressure relief valve shall be an approved automatic type with drain, and each shall be set at a pressure of not more than:

200 psi

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100 psi

75 psi

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5. When suspended, cast iron hub and spigot compression gasket pipe over 4’ in length must be supported –

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At every other joint

At 18" intervals

At 36" intervals

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