La. Admin. Code tit. 51 § XIV-625

Current through Register Vol. 50, No. 11, November 20, 2024

Section XIV-625 - Miscellaneous

A. Drain Cock. All storage tanks shall be equipped with adequate drain cocks.

B. Line Valves. Valves in the water supply distribution system, except those immediately controlling one fixture supply, when fully opened shall have a cross-sectional area at the smallest orifice or opening through which the water flows at least equal to the cross-sectional area of the nominal size of the pipe in which the valve is installed.

C. Water Used for Processing. Water used for cooling of equipment or similar purposes shall not be returned to the potable water distribution system, water service pipe, or water supply system. When discharged to the building drainage system or other point of disposal, the waste water shall be discharged through an air gap (water distribution).

D. Trap Primers Connected Directly to a Potable Water System. Trap primers which connect directly to a potable water system shall comply with the following.

1. Trap primers which are connected directly to a potable water system shall be constructed with integral air gaps. In addition to the integral air gap, additional backflow protection shall be provided by the installation of either an approved air gap device on the discharge line from each trap primer, or by the installation of an approved reduced pressure principle backflow preventer on the trap primer's individual potable water supply line.

2. Trap primers (and associated air gap device and/or reduced pressure principle backflow preventer) shall be accessible and shall not be concealed by building or other construction.

3. Trap primer drains shall be constructed to completely drain by gravity after each cycle of operation and, in no case, shall the drain be connected to the trap below the top of the trap water seal or trap outlet weir.

4. Trap primer air gaps, when required, shall be located a minimum of 6 inches (152 mm) above the flood level of the floor drain or receptor served.

5. Trap primers which connect to the potable water system shall be connected to the cold water supply in accordance with the manufacturer's recommendations.

6. Separate cutoff valves shall not be installed between a trap primer and its water supply except that a cutoff valve for an individual fixture shall control both the water supply to the trap primer and the individual fixture to assure a constant supply to the primer.

La. Admin. Code tit. 51, § XIV-625

Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2846 (November 2012).

AUTHORITY NOTE: Promulgated in accordance with R.S. 40:4(A)(7) and R.S. 40:5(2)(3)(7)(9)(16)(17)(20).