Self-Test D-3.2 Describe Connection Methods of Fittings

Complete Self-Test D-3.2 and check your answers.

1. To lubricate and seal threaded piping, you should use
   1. Teflon thread
   2. Pipe dope
   3. Silicone
   4. Plumber’s putty
2. Two common forms of Teflon thread sealants are liquid and
   1. Gelatin
   2. Spray
   3. Stick
   4. Tape
3. O-ring and shaped gaskets are used to form seals between
   1. Bell-and-spigot piping
   2. Flanged piping
   3. Groove piping
   4. Threaded piping
4. The most common types of sealing gaskets used in domestic plumbing installations are made from
   1. Wax
   2. Lead
   3. Silicone
   4. Elastomeric substances
5. The sealants that may be toxic and should only be used in well-ventilated conditions include
   1. Plumber’s putty, silicone caulking, wax
   2. Silicone caulking, pipe dope, solvent cement
   3. Solvent cement, vegetable fibre gaskets, wax
   4. Pipe dope, graphite packing, plumber’s putty
6. Ready-made gaskets that fit flat flanges and have matching bolt holes for easy installation are
   1. Donuts
   2. Ring gaskets
   3. O-rings
   4. Self-sealing gaskets
7. A self-sealing gasket is found in a
   1. Victaulic fitting
   2. Bell-and-spigot joint
   3. Full face flange
   4. Mechanical joint coupling
8. Thread compounds act to lubricate, seal and protect threaded pipe joints from
   1. Overtightening
   2. Damage from rapic temperature changes
   3. Rust and corrosion
   4. Staining
9. Metal gaskets are usually found in
   1. Fixture drains
   2. Industrial applications
   3. Medical fixtures and fittings
   4. Hot water piping
10. The sealant used to form watertight seals under faucets, drains and strainers
    1. Plumber’s putty
    2. Silicone caulking
    3. Solvent cement
    4. Teflon

For questions 11 to 15, use the set times and cure schedule for PVC solvent cements shown in Table 1.

11. If you were sealing 1/2 PVC piping inside a house, in the summer, how much time should you allow for the cement to set?
    1. 2 minutes
    2. 2 minutes
    3. 2 minutes
    4. 2 minutes
12. How long would you allow the 1/2 PVC piping to cure completely?
    1. 15 minutes
    2. 20 minutes
    3. 30 minutes
    4. 6 hours
13. If you were sealing 6 PVC piping in an irrigation system on a mild, dry day in the middle of winter, how long would you allow for the cement to set?
    1. 10 minutes
    2. 15 minutes
    3. 30 minutes
    4. 2 hours
14. Assuming that the irrigation system was at pressures above 160 psi, how long would you allow the joints to cure?
    1. 12 hours
    2. 24 hours
    3. 48 hours
    4. 8 days
15. If you had to solvent weld 2 PVC piping at freezing temperatures, how long would you allow the joint to set?
    1. 3 minutes
    2. 5 minutes
    3. 8 minutes
    4. 13 minutes

Answer Key: Self-Test D-3.2 is on the next page.