Sink Air Gap Purpose

Air gaps of appropriate design are required for water safety by legislation in many countries.

Sink air gap purpose.

The device is usually a small cylinder sitting on your cabinet top near the sink and faucet. Air gaps prevent cross connections and contamination by discharging water and waste across an unobstructed space a gap of air. In a properly functioning air gap the dishwasher hose attaches to an input on the air gap and the water is expelled out the end. The same principle applies to your dishwasher air gap.

How an air gap works. If you do not have an air gap hole on your counter you will have to drill one yourself. Gravity pulls it downward into the hose which carries it to the garbage disposal. An air gap s under sink installation requirements vary according to specific circumstances such as the presence of a garbage disposal unit and the location of drainpipes.

This way the water only leaves the dishwasher when it is pumped out. That space is between the fixture outlet and the flood level rim of a receptacle be it a sink floor drain standpipe or other approved unit. Air gap hoses are typically flexible rubber or plastic. A simple example is the space between a wall mounted faucet and the sink rim this space is the.

The air gap makes a hole for air to get in. From the outside the dishwasher air gap seems to be a 2 inch tall metal cylinder on one side of the kitchen sink but the internal plumbing of the air gap is the important part since it prevents contaminated water from draining back into your dishwasher due to a stopped up sink a plugged tube or a clogged garbage disposal. The gap where the water falls downward through the air instead of a hose functions to prevent siphoning and. The backed up sink water won t reach the faucet outlet and contaminate your water supply.

An air gap as it relates to the plumbing trade is the unobstructed vertical space between the water outlet and the flood level of a fixture. When your dishwasher pumps out the dirty grimy water it travels through a drain line into the air. Remove this disc and set it to the side. Bore a 1 3 8 hole in the countertop using an electric drill and hole saw.

The faucet outlet is always higher than the rim of the sink which creates an air gap between the two. Be sure the hole is close to the rim of the sink so the air gap will have ample room to drain in the event the tubes overflow. Item 1457760 model 105895srs. Moen spot resist stainless air gap stainless.

You can buy with confidence know that delta backs all of its sink accessories with a lifetime limited warranty. Air gap assembly an air gap assembly consists of two hoses under sink piping and a decorative cap.