I just did. He needs an air break not an air gap. The plumber that installed the drain knew the code and knew what he was doing too. Imagine that. Lots of folks that aren't plumbers and dont understand the code get confused by the difference.
AIR BREAK (Drainage System). A piping arrangement in
which a drain from a fixture, appliance or device discharges indirectly
into another fixture, receptacle or interceptor at a point
below the flood level rim.
+An air break is an indirect drainage method where
waste discharges to the drainage system through piping
that terminates below the flood level rim of an approved
receptor. An air break is commonly used to protect mechanical
equipment from sewage backup in the event
that stoppage occurs. It also protects the drainage system
from adverse pressure conditions caused by
pumped discharge [see Figure 202(4)].
Softener discharge is considered "pumped discharge"
AIR GAP (Drainage System). The unobstructed vertical distance
through the free atmosphere between the outlet of the
waste pipe and the flood level rim of the receptacle into which
the waste pipe is discharging.
+An air gap (drainage system) is a type of indirect waste
where waste is discharged to the drainage system
through piping that terminates at a specified distance
above the flood level rim of an approved receptor.
An air gap is commonly installed on drain lines serving
equipment that is used in the preparation, storage
and service of food, the conveyance of potable water,
and the sterilization of medical equipment. The air gap
serves as an impossible barrier for sewage to overcome
in the event that stoppage occurs in the receptor drain,
because sewage backup would overflow the receptor
drain flood level before it came in contact with the drain
line above [see Figure 202(4)].
IIRC weren't you the guy that spent three or four pages of a thread railing on about how you don't think that there should be any regulation requiring either an air break or an air gap? LOL
Hey you....quit reading my posts LOL