Publisher's Synopsis
Plumbing follows the basic laws of nature -- gravity, pressure, water seeking its own level. This will allow you to understand the "mysteries" of your home's plumbing system and provide dozens of solutions. This will save you time, effort, and money.
Two separate subsystems make up the plumbing system of your home. The one that brings in freshwater and the other that takes out wastewater are both subsystems of your home's plumbing system. Water that enters your home is pressured. The water enters your home under sufficient pressure to allow it travel upstairs, around corners or anywhere else it is needed. The meter records the water you use as it enters your home. The main water shutoff valve, also known as the stop valve, is usually located near the meter. It is important to close the main shutoff valve quickly in an emergency plumbing situation. If a pipe bursts it can quickly flood your home. You may not want your whole water supply to be shut off if the emergency is limited to a toilet, sink, or tub. Most fixtures should have separate stop valves.
The main supply water is available immediately for cold water requirements. The hot water supply, however, requires another step. One pipe carries water from the cold water system to your water heater. A hot water line runs from the heater to heat the water for all fixtures, outlets and appliances that use hot water. The thermostat controls the heater's temperature by switching the heating elements on and off. A home water heater's normal temperature is 140°F to 160°F, though 120°F is more common and economical. Some automatic dishwashers require higher temperature water, though many of these have a water heater within them that boosts the temperature another 20 degrees F
