Figure 5-44.Pressure-valve head flushometer.
Q16. What is the cause when water continuously flows
through a piston-type flush valve?
Q17. What happens to a diaphragm flush valve if oil or
grease is used on interior parts?
LEARNING OBJECTIVE: Recognize repair
procedures and maintenance of faucets.
There are many different types of faucets used in
plumbing installations. If you can repair the
compression washer faucet, you should have no
trouble in repairing other types of faucets. A cutaway
view of a compression faucet is shown in figure 5-45.
This faucet, with a disc washer and a solid or
removable seat, requires frequent attention to maintain
tight closure against water pressure.
When a faucet is turned off, the washer on the end
of the stem rubs against the seat. Frequent use wears
down the washer and eventually causes the faucet to
drip. A small, steady leak in a faucet wastes water. The
remedy for a dripping faucet is simply to replace the
washer. Be sure to replace flat or beveled washers with
washers of the same design.
To repair a standard washer faucet, follow the
1. First, shut off the water supply to the faucet and
open the faucet all the way.
2. Now, remove the faucet handle, bonnet, and
3. Next, remove the brass screw holding the
washer to the bottom of the spindle. Replace the washer
with a new one which is flat on one side and slightly
rounded on the other, so it can get both horizontal and
vertical pressure and provide a firm seat. Use a good
quality hard-compositionwasher because leather or soft
Figure 5-45.Compression faucet.