Minnesota Administrative Rules

4715.2120 LOCATION OF BACKFLOW PREVENTERS.

Backflow and back-siphonage preventing devices or assemblies must be located so as to be readily accessible, preferably in the same room with the fixture they serve. Installation in utility or service spaces, provided they are readily accessible, is also permitted.

The access area must provide enough space for testing and maintenance of the device. A backflow preventer must not be installed in a pit or other confined area subject to flooding. When a conductor pipe is provided from a backflow preventer drain, a visible air gap must be provided at the device. New installations of reduced pressure zone backflow preventers must be at least 12 inches, but not more than six feet, above the finished floor or ground level.

Statutory Authority:

MS s 16B.59; 16B.61; 16B.62; 16B.64; 326.37 to 326.45; 326B.101; 326B.106; 326B.121; 326B.13; 326B.43 to 326B.49

History:

15 SR 76; 19 SR 590; 28 SR 146; L 2007 c 140 art 4 s 61; art 6 s 15; art 13 s 4; 33 SR 2042

Published Electronically:

May 14, 2012