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Plumbing > 4. Plumbing Materials > Flashcards

4. Plumbing Materials Flashcards

1
Q

What is PVC?

A

Polyvinyl Chloride pipe used for sanitary drain, vent piping, above and underground water drainage, water mains, and water service lines. Connected with primer and solvent cement

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2
Q

What is CPVC?

A

Clorinated Polyvinyl Chloride cream colored piping used for hot and cold water distribution connected with solvent cement. 180 degrees, 100 psi. Very expensive

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3
Q

What is CPVC typically used for?

A

Sprinklers. Chicago won’t allow use.

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4
Q

What is PEX?

A

Cross-linked Polyethylene used for hot and cold water distribution. Flex line connected via press fittings or expander tool. 1/2 inch to 2 inch.

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5
Q

What are the benefits of PEX over Copper?

A

Faster installation, chemical and corrosion resistance, superior strength, high-temp and pressure resistance

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6
Q

What is the Extrusion Process?

A

Resins are heated, softened, and forced through a circular die. Creates a completely smooth inner surface.

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7
Q

What is an Expansion Loop and what is it for?

A

Allows water to expand in line through heating. Ticks and bangs in a drain line are a sign of expansion

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8
Q

What info does Plastic Pipe Markings provide?

A

Size, manufacturer, resin type, press. rating, standardization authorities like ASTM, etc.

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9
Q

What types of material are used for DWV?

A

Plastic, copper, cast iron.

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10
Q

What is a Home Run System and what does it do?

A

Plumbing design in which centrally located manifolds ditribue water to wach fixture with dedicated hot and cold lines. PEX

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11
Q

Review Fitting Styles on pg. 99.

A

Elbows, long-turn elbows, street elbows, stanitary tee, double sanitary tee, long-radius T-Y, cleanout adapter, why, double wye, test tee, closet flange, coupling, bushing, trap adapter, etc.

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12
Q

What is Fire Caulk and what is its purpose?

A

Fire resistant caulk used to seal joints around piping and other gaps to prevent fire from jumping floors in a building

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13
Q

What is a Steel Plate Protector and its purpose?

A

Placed between drywall and wooden beams to protect pipes from being puncured by nails or screws

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14
Q

What are the charicteristics of K copper pipe, its primary use, and color markings?

A

Heaviest gauge, used in refrigeration. Green writing. Very expensive

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15
Q

What are the charicteristics of L copper pipe, its primary use, and color markings?

A

Standard gauge, used in water piping. Blue writing. OK for Chicago Codes

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16
Q

What are the charicteristics of M copper pipe, its primary use, and color markings?

A

Thinnest and cheapest water piping. Red writing. Against Chicago Codes

17
Q

What are the charicteristics of DWV copper pipe, its primary use, and color markings?

A

Thin copper for Drainage only, typically in commercial buildings due to cost. Yellow writing

18
Q

What is the difference between K,L,M copper fittings and DWV fittings and why?

A

K,L,M fittings have deeper wells to receive more solder, because they are pressurized pipe

19
Q

What are the two styles of copper pipe called and what are their characteristics?

A

Annealed Copper, soft and flexible. Drawn Copper, rigid and sturdy

20
Q

What is Wrought Copper fittings?

A

Dull gold in color, heavier duty, made from 99.0 percent commercially pure copper. Rare

21
Q

What are Copper Press Fittings?

A

Solderless fittings joined through compressing fittings to pipe. Compressing pipe seals rubber gasket inside the fitting.

22
Q

What are benefits of Copper Press Fittings?

A

No sweating, more expensive but much faster install 20 to 1 ratio, water in pipe doesn’t prevent sealing. Direct Crimp is the best type

23
Q

Where are Compression and Flare Fittings used and why?

A

Typically buried underground. Don’t handle strain on joints

24
Q

Why is No-Hub Cast Iron drain pipe not allowed in Chicago?

A

Union pushing to maintain Bell and Spigot for added labor time

25
Q

How do you join No-Hub Cast Iron?

A

Sliding on a neoprene sleeve and then a coupling band and tighten

26
Q

What are Malleable Iron Fittings and what are reasons for not using them often?

A

Poured iron into dies and are threaded for connection. Heavy and split if over-tightened. Worst made in China

27
Q

What are the two class sizes for malleable iron pipe fittings?

A

Class 150, thinner. Class 300, heavy-duty

28
Q

How are 2” and smaller valve bodies made different from 2 1/2” and larger?

A

2” and smaller are typically made of all cast-bronze. 2 1/2” and larger are typically cast-iron with bronze internals

29
Q

What is a Gate Valve?

A

Full-way valve in which a threaded stem raises and lowers a wedge. Not for water regulation. Replaced by Ball Valves

30
Q

What is a Globe Valve?

A

Valve with a pliable, circular disk that is compressed against a seat. Can regulate water flow

31
Q

What is a Stop and Waste Valve?

A

Nonrated Globe Valve with a side port used to drain fluid from the outlet side of valve. Controls water flow to fixtures like sillcocks to prevent freezing

32
Q

What is a Sillcock?

A

Valve with a pipe that extends 10 inches into a house with an inner seat that stops water before the valve to prevent freezing

33
Q

What is a Corecock?

A

Valve through which water or gas flow is controlled by a circular core or plug that fits closely to a seat. 90 degree turn, water flows through the core as the valve is turned

34
Q

What is a Ball Valve?

A

Valve in which flow is controlled by a ball that fits tightly against a pliable seat. The best valve

35
Q

What is a Butterfly Valve?

A

Thin valve with a rotating disc that seats against a resilient material. 90 degree rotation

36
Q

What is a Check Valve?

A

Valve which only allows water to flow one way

37
Q

What is a Backwater Valve?

A

Valve used to prevent backflow of sewage into a building. Flapper-type, Combination, Auto-knife

38
Q

What is a Pressure Reducing Valve?

A

Automatic valve used to convert high or fluctuating pressure to a lower or constant outlet pressure. Usually 30 year lifespan

39
Q

What is a Relief Valve?

A

Valve designed to relieve pressure, high temp, or both to prevent. T and P valves have a temp probe

Plumbing (9 decks)

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