VENT _____..,.:-f' --r ~ VENT ------ I I

f-.-.. PREP I ''i PREP f---, I' SINK~ I I I SINK~ I I iHAND

SINK I, 1r1 I I ~ HAND SINKII PREP I"---.... I II l ~VENTSINK_, ~

TTFD

TTFD~~ TTFD~v~

INCORRECT INSTALLATIONS SINGLE SINK INSTALLATION

--r "'- .~VENT PREP I I ', , .,.

t---SINK\ HAND I "-k_l l SINK I'I --r I II I

Ih._I II 11 II I MULTIPLE SINKS II

'-.. I THREE­ I COMPARTMENT I ----,.--....::,,.SINK---_,

NOTES: - POT SINKS, SCULLERY SINKS, COMMERCIAL KITCHEN SINKS, BEVERAGE SERVICE SINKS, DISHWASHING SINKS, AND SILVERWARE

SINKS MUST BE DIRECTLY CONNECTED TO THE DRAINAGE SYSTEM. A FLOOR DRAIN WITHOUT BACKWATER VALVE MUST BE PLACED ADJACENT TO THE FIXTURE. THE FLOOR DRAIN MUST BE INSTALLED ON THE INDIVIDUAL DRAINAGE BRANCH OF THE SINK THAT IS BEING PROTECTED.

- TELL-TALE FLOOR DRAIN (TTFD) = FLOOR DRAIN WITHOUT BACKWATER VALVE

ii DEPARTMENT OFI LABOR AND INDUSTRY

1/18Tell-Tale Drains and Prep Sinks Telephone: (651) 284-5063 (MN Rules, Chapter 4714, Section 704.3) www.dli.mn.gov/ccld/planplumbing.asp