Diagram Of Bathroom Sink Plumbing

Diagram of Bathroom Sink Plumbing

Understanding the plumbing system behind your bathroom sink is crucial for maintaining and troubleshooting any potential issues. Here's a comprehensive diagram of bathroom sink plumbing, breaking down its essential components and their functions:

1. Faucet

The faucet is the visible part of the sink and controls the flow and temperature of water. It consists of two handles for hot and cold water, as well as a spout where water is dispensed.

2. Supply Lines

Supply lines are pipes that connect the faucet to the water supply. There are typically two supply lines: one for hot water and one for cold water. They are usually made of flexible plastic or metal.

3. Drain Assembly

The drain assembly encompasses all components involved in draining water from the sink. It consists of a drain stopper, drain basket, and drainpipe:

Drain Stopper: A plug that can be lifted or lowered to control the flow of water into the drain.
Drain Basket: A basket-shaped component that catches debris and prevents it from clogging the drain.
Drainpipe: A pipe that carries wastewater from the sink to the main drain.

4. P-Trap

The P-trap is a U-shaped pipe that connects the drainpipe to the main drain. It acts as a barrier, preventing sewer gases from entering the bathroom. The bend in the P-trap holds water, creating a seal.

5. Vent Pipe

The vent pipe is a vertical pipe that extends from the P-trap and connects to the roof. It allows air to circulate within the drainage system, preventing clogs and ensuring proper drainage.

6. Cleanout Plug

The cleanout plug is a removable cap located at the base of the P-trap. It provides access for cleaning or clearing clogs from the drainpipe.

7. Water Supply Lines

The water supply lines are pipes that connect the faucet to the main water supply. They are typically made of copper or PEX tubing and are concealed behind the wall or vanity.

8. Vanity Cabinet

The vanity cabinet is a storage unit that houses the sink and other bathroom fixtures. It also conceals the plumbing components and provides access to them through a removable panel.

9. Drain Line

The drain line is a pipe that carries wastewater from the sink to the main sewer line. It is typically larger in diameter than the drainpipe and is concealed beneath the floor or vanity.