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MINNESOTA RULES, CHAPTER 4714, SECTIONS 603.5.17 AND 301.2
1. DIRECT CONNECTION TO POTABLE 2. CONNECTION TO MOP SINK FAUCET 3. DIRECT CONNECTION TO POTABLE WATER SYSTEM WITH A SVB OR PVB WITH PRESSURE BLEEDING DEVICE WATER SYSTEM WITH ASSE 1055*
(WHERE PERMITTED BY THE AHJ) CHEMICAL DISPENSER (WHERE PERMITTED BY THE AHJ)
CHEMICAL DISPENSER, *ASSE 1055NO LISTING REQUIRED ASSE 1001 AVBLISTED CHEMICAL DISPENSER
PVB OR SVB MUST BE CODE COMPLIANT
MATERIAL UP TO CONNECTION SPILL TO CHEMICAL DISPENSER\
12-INCH•--L~INEI MINIMUM
~--++- --++-~-
*ASSE 1055 LISTED CHEMICAL
/ DISPENSER /
\_SHUTOFF I VALVE I * INTEGRAL MEANS OF
BACKFLOW PROTECTION • MUST NOT BE SUBJECTED LISTED TO ASSE 1055
TO BACK PRESSURE • IF SUBJECTED TO BACK
PRESSURE, AN RPZ IS REQUIRED
AHJ = AUTHORITY HAVING JURISDICTION RPZ = REDUCED-PRESSURE PRINCIPLE AVB = ATMOSPHERIC VACUUM BREAKER SVB = SPILL-PROOF VACUUM BREAKER PVB = PRESSURE VACUUM BREAKER
ii DEPARTMENT OFI LABOR AND INDUSTRY
12/17Typical Chemical Dispenser Installations Telephone: (651) 284-5063 www.dli.mn.gov/ccld/planplumbing.asp