Minnesota Administrative Rules

4715.1330 FLUSH TANKS.

Subpart 1.

Water supply for flush tanks.

An adequate quantity of water shall be provided to flush and clean the fixture served. The fixture supply to a flush tank must have a shutoff valve. The water supply to flush tanks equipped for manual flushing shall be controlled by a float valve or other automatic device designed to refill the tank after each discharge and to completely shut off the water flow to the tank when the tank is filled to operational capacity. Provision shall be made to automatically supply water to the fixture so as to refill the trap seal after each flushing, the water supply to flush tanks equipped for automatic flushing shall be controlled by a suitable timing device. (See part 4715.1770, subpart 2.)

Subp. 2.

Overflows in flush tanks.

Flush tanks shall be provided with overflows discharging to the water closet or urinal connected thereto and of sufficient size to prevent flooding of the tank at the maximum rate of water supply. Where the float valve is below the rim of the flush tank, it shall be elevated above the overflow and provided with a vacuum breaker or air gap. (See part 4715.2150, subpart 2, protective devices.)

Statutory Authority:

MS s 16B.62; 326.37 to 326.45; 326B.121; 326B.43 to 326B.49

History:

19 SR 590; L 2007 c 140 art 4 s 61; art 6 s 15; art 13 s 4

Published Electronically:

May 14, 2012