Indirect Plumbing Connection Floor Drain

A cistern is a tank for storing water.

Indirect plumbing connection floor drain.

Floor drains located within walk in refrigerators or freezers in food service and food establishments shall be indirectly connected to the sanitary drainage system by means of an air gap. An indirect waste is a drainage piping that runs from a plumbing fixture or appliance and discharges into a separate waste pipe or receptacle. The drainage air gap is not the same as the water distribution air gap. Let s start with indirect waste or an indirect drain.

Membrane clamp ring for sub surface waterproof layer. Indirect drain connection using three reducers note. Homes can either have a direct plumbing system or an indirect plumbing system. Discharge through an indirect waste pipe by means of an air gap.

To some degree the name defines its function. Removable bottle trap for use with untrapped drain bodies or direct connection gratings. Indirect waste piping shall discharge into the building drainage system through an air gap or air break as set forth in this code. The water distribution air gap is defined in chapter 6 and determined by table 603 3 1 see figure 801 2b.

In this kind of plumbing system the rising main feeds the cold water cistern as well as the kitchen tap. The compartments must be drained slowly to reduce splash. In the center image we see how a proper indirect drain can be set up there should be a minimum of 1 5 of space between the discharge end of the hose to the top of. Square or circular to suit floor finish.

Where a drainage air gap is required by this code the minimum vertical distance as measured from the lowest point of the indirect waste pipe or the fixture outlet to the flood level rim of the receptor shall be not less than 1 inch 25 4 mm. Shall not exceed 15 feet 4572 mm. Indirect waste indirect drain. Bolt on funnel for indirect drain waste pipes such as condensate discharge.

The image on the left shows an indirect drain going through a building wall to the exterior this type of drain may go into a septic system dry well or a municipal storm sewer. This method may be allowed on a case by case basis. Floor level 3 compartment or drain board food prep sink sink leg drain line from sink minimum 4 to 2 reducer air break to sewer indirect drain connection using one reducer. Indirect plumbing systems are found in most homes.

802 1 2 floor drains in food storage areas. Nonetheless you need context to understand its main purpose. 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.