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