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26 Cards in this Set
- Front
- Back
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Plastic Pipe & Fittings by JCW |
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Type of plastic that becomes soft and malleable when heated is? |
Thermoplastic |
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How can you differentiate ABS DWV pipe from PVC DWV pipe? |
ABS is black PVC is grey |
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List 5 advantages of plastic pipe over ferrous pipes |
Better chemical, electrical, corrosion & shock resistance Smoother bore, less friction |
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Which has higher temperature resistance, ABS or PVC? |
ABS |
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What type of plastic pipe is used for underground gas lines |
High density PE |
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Minimum surface temperature recommended for solvent cementing plastic pipe & fittings is? |
5C or 40F |
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What colour are Polypropylene (PP) pipes? |
Brown |
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What type of pipe is blue and which type of pipe is it similar to? |
Polyxylene (PX), similar to Polypropylene |
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What does it mean to nest a pipe? |
Storing small pipes within larger pipes |
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What type of joint is used to join large plastic sewer or water lines? |
Bell-types |
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Which 3 plastics is suitable for acid DWV |
PE, PP & PX |
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Maximum distance between supports for rigid plastic pipe is? |
1.2m or 4' 0.8m or 2 1/2' |
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There are 3 ways to join plastic pipe and fittings using heat. What are they? |
Butt welding Fusion socket welding Electric resistance welding |
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2 ways plastic acid waste pipes can be joint |
Socket fusion welding Acid resistant mechanical couplings |
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What do you use to check temperate when fusion welding? |
Temp sticks |
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The two types of plastics used in radiant panel heating are? |
PEX PE/AL/PE |
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3 types of plastics used in domestic water lines? |
PE/AL/PE PEX |
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When joining plastic pipe to metal pipe with a threaded connection, the plastic must what kind of thread? |
MIP Thread |
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The 3 types of plastic that can be joint with solvent cement is? |
ABS |
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Why must plastic pipe be kept away from sunlight? |
Plastic breaks down due to sunlight's UV rays |
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If your solvent cement starts to gel, what must you do |
Discard the cement safely |
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What must you ensure before you butt weld plastic pipes and fittings? |
That the ends are perfectly square or the joint will be weakened considerably |
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What must you do before you use solvent cement on PVC pipe and fittings? |
Use a primer or cleaner, to remove the protective outer coat on the PVC, such that you get a good joint |
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How long does it take for solvent cement to cure before it can be pressure tested? |
12 - 48 hours, depending on pipe size |
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Can you thread plastic pipe? If so, what special care must you do? |
Yes you can. |
