practical problems
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MEGAREVIEW andTUTORIAL CENTER
PLUMBING REVIEW
PRACTICAL PROBLEMS
Module No. 1
1-a.
Common Types of Valves:
1. Gate Valve/Full Way Valve2. Globe Valve/Compression Valve3. Ball Valve/Quick Opening Valve4. Butterfly Valve5. Check Valve6. Backwater Valve
1-b.
1-c.
1-d.
2.
2.
4-c.
Practical Reasons Why Traps are Needed
• to prevent harmful gases from the drainage system
• to prevent vermin
Reasons for Trap Seal Loss:
1. Back pressure2. Siphonage3. Capillary action4. Evaporation
6-a.
8-a.
8-b
8-c
Common Types of Fittings
1. Elbow2. Tee3. Wye4. Plug5. Cap6. Coupling7. Union
11
18
Common Types of Joints
1. Caulked2. Screwed3. Welded4. Soldered5. Flared6. Flanged7. Brazed
Flared Joint
22-d.
Common Types of Vent
1. Individual vent/Revent/Back vent2. Unit Vent3. Wet Vent4. Combination waste and vent5. Group vent/Circuit vent/loop vent6. Branch vent7. Looped vent8. Yoke vent9. Relief vent
42-b.
50-d.
50-d.
56.
63.
64-a
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