Section 408.30785. Requirements for discharge piping.

Section 504.6 of the code is amended to read as follows:

504.6.  Requirements for discharge piping. (1)    Relief  valves   shall  not discharge so as to be a hazard, a potential cause of damage, or a nuisance.

A relief valve discharge pipe shall be provided for  each   individual  relief valve and shall meet all of the following:

(a)  Shall terminate atmospherically not more than 4 inches (1220 mm)   from the floor with an unthreaded end.

(b)	Shall not be interconnected.
(c)	Valves shall not be connected in the relief valve discharge pipe.
(d)	Shall  be  rigid  pipe  approved   for  water  distribution,    with	a	minimum

temperature rating of 210 degrees Fahrenheit.

(e)      Shall have the same nominal inside diameter as the relief valve outlet and shall drain by gravity flow.

(f)     Shall discharge to the floor, to the pan serving the water  heater   or storage tank, or to a waste receptor.

(2)  The outlet of a pressure, temperature or other relief valve shall  not be directly connected to the drainage system.

History:  1979 AC; 1982 AACS; 1989 AACS; 1998-2000 AACS;  2001  AACS;  2007 AACS; 2010 AACS.