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50 Cards in this Set
- Front
- Back
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What are hangers and supports needed for? |
1) Carry the weight of the pipe and contents 2)To grade drainage 3) prevent sagging and deflection 4) Allow for expansion/contraction |
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Should your hangers or supports prevent expansion/contraction? |
Hell no |
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Pipe needs to be supported in what positions? |
Vertically and horizontally |
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When using hangers, what would be used when you have pipe insulation? |
A saddle or insulation protector |
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Pipes must be supported individually, true or false? |
True; you cannot support pipes with other pipes 🙄 |
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When hanging copper pipe, what must be taken into account? |
Use similar metal materials to prevent electrolysis. If not, leaks will occur |
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Hanger spacing formula? |
Distance ➗ hanger spacing ➕1 |
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Piping Time |
Back (Definition) |
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Benefit of cast iron over plastic/copper piping? |
Much quieter and offers better corrosion resistance |
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Torque for MJ? |
60 inch/pounds torque |
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Temp limit for glass piping? |
450F |
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Glass pipe is good for what pressures? |
50-100 psi size dependant |
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Joining methods for glass pipe? |
Mechanical- bead to bead, bead to pipe, pipe to pipe Flanged |
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Historical piping methods? |
Lead- replaced Bituminized- replaced Clay- under ground only (brittle) Aluminum- no longer used Asbestos- 💀 Wood- replaced |
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How is cast iron joined? |
Hot & cold caulked, compression and mechanical joints (MJ) |
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Carbon contents of cast iron pipe? |
1.8%-4.8% |
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A cast iron 90 elbow is known as a? |
1/4 bend |
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A cast iron 45 is known as a? |
1/8 bend |
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What can be added to cast to improve ACID resistance? |
Silicone, increases expansion rate by 3x tho |
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What is added to cast to increase strength and ductility? |
Magnesium |
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Caulked joints have to have a minimum hub end depth of? |
1” |
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What is needed for horizontal joints? |
Running rope |
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Direction of flow is always |
Thru hub end first |
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Copper pipe is measured same as? |
Steel pipe |
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Tubing available in type? |
GP, G, L, K |
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Alloys: Red Brass |
85% copper 15% zinc |
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Yellow brass? |
66% copper 34% zinc |
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Alloys for bronze? |
90% copper 10% tin |
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Types of copper that cannot be bent? |
DWV and M |
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Joining methods for copper? |
Solder Compression Flaring |
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Soft soldering? |
Under 1000F |
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Hard soldering (brazing) |
Over 1000F |
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In 50/50 solder, what does the first number represent? |
Tin content |
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Max lead content for potable? |
0.2% |
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Copper tube |
Measured by ID 12-20 ft lengths |
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What copper is permitted under ground? |
Soft temper |
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Degree of flare? |
45 degrees |
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What is a ferrule? |
Main sealing component in a compression fitting |
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Solder needs time to |
Cooool |
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ROT for soldering? |
Diameter of pipe= length of solder needed for joint |
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What will cause copper to deteriorate under ground? |
Suffer |
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Temperature of acetylene? |
4000F (2200C) |
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Copper tube types with colors |
GO! |
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DWV |
Yellow |
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Type H |
White |
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Type M |
Red |
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Type L |
Blue |
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Type K |
Green |
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What will cause copper to deteriorate under ground? |
Sulfur |
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Copper tubing is measured by? |
OD annealed and comes in rolls |
