Air Gap Water Distribution System

The simplest most reliable way to provide backflow prevention is to provide an air gap.

Air gap water distribution system.

Even with this design there is always a risk of backflow after which wastewater cannot properly find the right pipe and enters the fresh water supply line. Once potable water leaves the outlet of a fixture it s either used or sent down the drain. In a plumbing system potable water and wastewater are intended to flow through different pipes to avoid contamination. List the three primary functions of a water.

An air gap in your plumbing system prevents health hazards. 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. Utilizing the concept of a physical air gap these systems prevent the direct contact between potable water and non potable water within a building or facility. Air gap break tank systems provide several safeguards to ensure that the two water types can never cross contaminate.

An air break provides a physical separation between the fixture indirect waste pipe and the receptor. An acceptable air gap must be twice the supply pipe diameter but never less than one inch measured vertically above the receiving vessel. An air break simply requires that there be no direct physical connection between the fixture indirect waste pipe and the receptor see figure 801 2a. In the event of a drain back up or flood the contents of the drain line should never be able to make contact with the water supply the two plumbing systems for potable water and for waste should always remain separate.

Water distribution air gap. Air gaps of appropriate design are required for water safety by legislation in many countries. In simple terms an air gap is the simplest backflow prevention method. An air gap is the most simple and effective means of preventing contamination of a potable water supply.

There are two types of piped systems. Air gap water distribution system the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank plumbing fixture or other device and the flood level rim of the receptacle. Water cannot flow from the sink to the tap in normal circumstances even if the water supply loses pressure. The conventional system and the completely looped circulat ing system.

The circulating system is common in the arctic. An air gap is simply an open vertical space between any device that connects to a plumbing system like a valve or faucet and any place where contaminated water can collect or pool. A simple air gap has no moving parts other than flowing water. Air gaps are very effective whether backsiphonage or backpressure is the backflow condition being isolated.