What Size Drain Pipe For Kitchen Sink

What Is the Minimum Drain Line Size for a Kitchen Sink?

Kitchen sinks have standard drain line sizes, which means all sinks manufactured adhere to the same basic dimensions every bit far as the drain is concerned. Sinks are a mutual appliance, and therefore standardizing the near mutual features for better functionality and interchangeability just makes sense.

Kitchen Sink Bleed Sizes

Kitchen drains and drain lines are sized for functionality.

All kitchen sinks today take the same diameter bleed, which is three one/2 inches and is larger than a bathroom bleed which measures in at i ane/4 inches. It is the same size as a typical standard shower drain, however. When installing a new drain into the sink, you have no need to store for certain diameter drains. All drains manufactured will adhere to this standard size. The drain size is not random; it is sized to meet sure needs. The drain line is also sized for functional reasons.

Kitchen Drain Line Sizes

The drain line running to your kitchen sink is as well sized to accommodate the water flow from your sink; withal, it is not standardized. It must drain off the water dispensed from your faucet and handle the waste that is sent down the bleed. Then the drain line is unremarkably 1 1/2 inches in diameter. This size drain line is sufficient for kitchen utilize. A bathroom sink bleed line is typically 1 1/4 inches, slightly smaller. Some kitchen sinks experiencing very light utilise may use this size drain, but it is not recommended. It is the absolute minimum drain line size for any kitchen faucet. Any smaller and the drain line will clog frequently.

Drain Line Setup

Most kitchen sinks have a P-trap drain line, which is an S-shaped piping articulation installed correct beneath the sink. The shape of the bleed prevents dorsum menses into the sink because the water travels upwardly the side of the P-trap earlier flowing directly downwardly through the bleed, which is common in any sink drain system. Bathroom and bar sinks besides use this configuration to reduce back flow. The P-trap is then routed to the drainpipe, which is usually a horizontal pipe routed from the habitation's drain line to nether the sink.

Plumbing a Drain

When plumbing a drain, the i 1/four-inch drain line is run to the P-trap and then to the main drain line. If the main drain line is larger, a step down adapter is installed. Main bleed lines are designed to handle larger loads and are sized appropriately. Some drain lines run between 1 ane/2 to 2 inches in bore. Each fourth dimension a pipe is connected to a larger bore pipe, an adapter is used to bridge the connexion.