Bathroom Plumbing
Hot & Cold Sink Supply Lines/ShutoffsThere are small faucet knobs that control and shut off the flow of water for both the hot and cold water for the lavatory(s) as well as a cold supply for the toilet and/or bidet. Usually these faucets will have a ½-inch copper pipe coming in to the shutoff and have 3/8 or 1/4-inch tubing from the shutoff to the lavatory faucet or toilet |
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Plumbing Traps
In order to prevent sewer gasses and odors from entering the house, plumbing drains are designed with "traps." A trap is a section of the drain pipe, usually directly under the drain, that forms an "S," and the drain pipe forms a 180-degree curve followed directly by another 180-degree curve. The pipe can also form a "P," and the drain pipe forms a 180-degree curve followed by a 90-degree curve. The trap or curves in the pipe are designed to allow the water to drain and remaining filled with water. The water acts as a barrier to the sewer gasses. |
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It is very important that a drain pipe have a trap installed in order to prevent sewer gasses from entering the house’s breathable airspace.