REDUCED PRESSURE PRINCIPLE - City of Charlotte

1 backflow PREVENTION ASSEMBLIES (BPA's) SHALL CONFORM TO CLT WATERPIPE MATERIAL AND FITTINGS SHALL BE AS SPECIFIED IN CLT WATERSTANDARDS & LOCATIONS FOR BPA'S REQUIRE CLT WATER APPROVAL AND MUST INSULATEDENCLOSURE MEETING ASSE1060 WATERABOVE GROUNDSEENOTE #4 & #5 INSULATED ENCLOSURE SHALL BE AS SPECIFIED IN CLT WATER ENCLOSUREINFORMATION - HEATED INSULATED ENCLOSURE IS :END OF THE FOR MIN. OF 5' ON EACHPIPE OR GALVANIZED STEELTYPE K OR L COPPER TUBINGSHUT-OFF VALVE #2 CHECK VALVE #1 REDUCED PRESSURETYPICAL LOCATION REQUIREMENTFOR ABOVE GROUND SHUT-OFF VALVES ARE SPECIFIC TO EACH APPROVEDPRINCIPLE ASSEMBLYCHECK VALVE #2 FLOWCLT WATER REQUIRED BPAROAD R/WTESTSTRAINERRECOMMENDEDMIN.

2 4" THICKCONCRETEPAD REQUIRED12" " RELIEFVALVEOUTLETAWAY FROMSLOPE GROUNDCOVER (TYP.)EACH CLT WATER-REQUIRED BPA IS REQUIRED TO BE TESTED BY ACLT WATER - APPROVED CERTIFIED TESTER PRIOR TO PLACING THE WATERSYSTEM IN SERVICE. TEST RESULTS SHALL BE SUBMITTED TO CLT WATER THERE SHALL BE NO TAPS, PIPING BRANCHES, UNAPPROVEDBYPASS PIPING, HYDRANTS, FIRE DEPT. CONNECTION POINTS, OROTHER WATER - USING APPURTENANCES CONNECTED TO THESUPPLY LINE BETWEEN ANY WATER METER AND ITSCLT WATER - REQUIRED backflow PRESSURE PRINCIPLEENCLOSURE TO INCLUDESUPPORT ASREQUIRED INSTALLATIONS INTENDED FOR ADDRESSING CLT WATERREQUIREMENTS, REQUIRE PRIOR APPROVALFROM THE APPROPRIATE CLT WATER backflow OF ZONING SET-BACK/ DIRECTLY BEHIND VALVE #1NO INSULATION SHALL BE WRAPPED AROUND PORT(S) PER CLT WATERREQUIREMENT.

3 (TYP.)SLEEVE REQUIREDCOCK #1 BPA AND NO SUBSTITUTIONS OF SHUT-OFF VALVES ARE PERMITTED. REFER TO CLT WATER APPROVED LIST OF BPA' NOTE # DATEA CITY OF Charlotte DEPARTMENTHINGED ACCESS ORSLEEVE REQUIRED (TYP.)WITHIN 30 DAYS AND TESTED ANNUALLY THEREAFTER SUBMITTING RESULTS TO CLT R/WMETERCLT WATERCLT WATER REQUIRED BPAABOVE GROUNDSEENOTE #6 & #7 CONCRETE FOOTINGS ASSUPPORT, PAD AND REQUIRED BY SYSTEM DESIGNERON EACH END OF FOR MIN. OF 5'TYPE K OR L COPPERSEE NOTE #2 SHUT-OFF VALVE #2 CHECK VALVE #2 REDUCED PRESSURE PRINCIPLE ASSEMBLYTYPICAL LOCATION REQUIREMENTFOR ABOVE GROUND VALVE #1 FLOWFIRE LINE SERVICES SHALL HAVE OUTSIDE STEM AND YOKE (OS & Y)HANDWHEEL OPERATORS OR BUTTERFLY VALVES, AND LISTED ON APPROVED LIST AS FIRE APPROVED.

4 IF SERVING FIRE SPRINKLERS, TAMPER SWITCHES ARE MATERIAL AND FITTINGS SHALL BE AS SPECIFIED IN CLT WATERSTANDARDS SPECIFICATION. ALL JOINTS SHALL BE RESTRAINED WITHMEGALUG RESTRAINTS OR APPROVED OF ASSEMBLY SHALL BE DESIGNED BY OWNER, 8" - 12" SHALLBE SUPPORTED AT EACH VALVE AND SHALL NOT BLOCK RELIEF VALVERESTRAINED JOINTSEE NOTE #3 RESTRAINED JOINTSEE NOTE #3 DUCTILE IRON PIPE ORSHUT-OFF VALVE #1 OUTLETRELIEF VALVE12" " NOTE #3 TEST COCK #1 SLOPE GROUNDAWAY FROMCOVERLOWEST POINT ORRELIEF VALVE OUTLETBACKFLOW PREVENTION ASSEMBLIES (BPA's) SHALL CONFORM TO CLT :SPECIFICATIONS. SHUT-OFF VALVES ARE SPECIFIC TO EACH AND NO SUBSTITUTIONS OF SHUT-OFF VALVES ARE PERMITTED.

5 REFER TO CLT WATER APPROVED LIST OF BPA' ENCLOSURE SHALL BE AS SPECIFIED IN CLT WATER ENCLOSUREINFORMATION - HEATED INSULATED ENCLOSURE ARE REQUIRED FOR FIRE LINE SERVICES. NO INSULATION SHALL BE WRAPPED AROUND LOCATIONS FOR BPA'S REQUIRE CLT WATER APPROVAL AND MUST BEOUTSIDE OF ZONING SET-BACK DIRECTLY BEHIND SHALL BE NO TAPS, PIPING BRANCHES, UNAPPROVEDBYPASS PIPING, HYDRANTS, FIRE DEPT. CONNECTION POINTS, OROTHER WATER - USING APPURTENANCES CONNECTED TO THESUPPLY LINE BETWEEN ANY WATER METER AND ITSCLT WATER - REQUIRED backflow CLT WATER-REQUIRED BPA IS REQUIRED TO BE TESTED BY ACLT WATER - APPROVED CERTIFIED TESTER PRIOR TO PLACING THE WATERSYSTEM IN SERVICE.

6 TEST RESULTS SHALL BE SUBMITTED TO CLT INSTALLATIONS INTENDED FOR ADDRESSING CLT WATERREQUIREMENTS, REQUIRE PRIOR APPROVAL FROM THE APPROPRIATE CLT WATER backflow INSULATEDENCLOSURE MEETING ASSE1060 TO INCLUDEDRAIN PORT(S) PER CLT REQUIRED(TYP.)CONCRETE PADMIN. 4" THICKREQUIREDSEE NOTE #2ON DRAIN NOTE #4 SEE NOTE #4 SUPPORTSSUPPORTSWITHIN 30 DAYS AND TESTED ANNUALLY THEREAFTER SUBMITTINGRESULTS TO CLT ACCESS OR6" VALVECOVER MUST NOTBEING FULLYOPENEDSLEEVE REQUIRED(TYP.) DATEREDUCED PRESSURE PRINCIPLEZONINGSETBACKPROPERTYLINEPUBLIC WATERMAINROAD R/WMETERCLT WATERCLT WATER REQUIRED BPAABOVE GROUNDSEENOTE #6 & #7 CONCRETE FOOTINGS ASSUPPORT, PAD AND REQUIRED BY SYSTEM DESIGNERON EACH END OF FOR MIN.

7 OF 5'TYPE K OR L COPPERSEE NOTE #2 SHUT-OFF VALVE #2 CHECK VALVE #2 DOUBLE CHECK VALVE ASSEMBLYTYPICAL LOCATION REQUIREMENTFOR ABOVE GROUND VALVE #1 FLOWPIPE MATERIAL AND FITTINGS SHALL BE AS SPECIFIED IN CLT WATERSTANDARDS SPECIFICATION. ALL JOINTS SHALL BE RESTRAINED WITHMEGALUG RESTRAINTS OR APPROVED OF ASSEMBLY SHALL BE DESIGNED BY OWNER, 8" - 12"SHALL BE SUPPORTED AT EACH JOINTSEE NOTE #3 RESTRAINED JOINTSEE NOTE #3 DUCTILE IRON PIPE ORSHUT-OFF VALVE #1 SEE NOTE #3 TEST COCK #1 SLOPE GROUNDAWAY FROMCOVERDOUBLE CHECK VALVE ASSEMBLY (DC) backflow PREVENTION ASSEMBLIES (BPA's) SHALL CONFORM TO CLT :SPECIFICATIONS.

8 SHUT-OFF VALVES ARE SPECIFIC TO EACH AND NO SUBSTITUTIONS OF SHUT-OFF VALVES ARE PERMITTED. REFER TO CLT WATER APPROVED LIST OF BPA' ENCLOSURE SHALL BE AS SPECIFIED IN CLT WATER ENCLOSUREINFORMATION - HEATED INSULATED ENCLOSURE ARE REQUIRED FOR FIRE LINE SERVICES. NO INSULATION SHALL BE WRAPPED AROUND LOCATIONS FOR BPA'S REQUIRE CLT WATER APPROVAL AND MUST BEOUTSIDE OF ZONING SET-BACK DIRECTLY BEHIND SHALL BE NO TAPS, PIPING BRANCHES, UNAPPROVEDBYPASS PIPING, HYDRANTS, FIRE DEPT. CONNECTION POINTS, OROTHER WATER - USING APPURTENANCES CONNECTED TO THESUPPLY LINE BETWEEN ANY WATER METER AND ITSCLT WATER - REQUIRED backflow INSTALLATIONS INTENDED FOR ADDRESSING CLT WATERREQUIREMENTS, REQUIRE PRIOR APPROVALFROM THE APPROPRIATE CLT WATER backflow INSPECTOR.

9 REMOVABLE INSULATEDENCLOSURE MEETING ASSE1060 TO INCLUDEDRAIN PORT(S) PER CLT REQUIRED(TYP.)CONCRETE PADMIN. 4" THICKREQUIREDSEE NOTE #212" " NOTE # DATEA CITY OF Charlotte DEPARTMENTHINGED ACCESS OR6" VALVECOVER MUST NOTBEING FULLYOPENEDSLEEVE REQUIRED(TYP.)FIRE LINE SERVICES SHALL HAVE OUTSIDE STEM AND YOKE (OS & Y)HANDWHEEL OPERATORS OR BUTTERFLY VALVES, AND LISTED ON APPROVED LIST AS FIRE APPROVED. IF SERVING FIRE SPRINKLERS, TAMPER SWITCHES ARE CLT WATER-REQUIRED BPA IS REQUIRED TO BE TESTED BY ACLT WATER - APPROVED CERTIFIED TESTER PRIOR TO PLACING THE WATERSYSTEM IN SERVICE. TEST RESULTS SHALL BE SUBMITTED TO Charlotte 30 DAYS AND TESTED ANNUALLY THEREAFTER SUBMITTINGRESULTS TO CLT NOTE #2 SCH.

10 80 PVC OR SCH. 40 PVC PIPE WITH PIPE, 1" MIN. GALVANIZED STEELTYPE K OR L COPPER TUBINGFLOWPLAN VIEWELEVATION VIEWSHUT-OFFVALVE #1 SHUT-OFFVALVE #2 CHECKVALVE #1 DOUBLE CHECK VALVEASSEMBLY4" " " " #6 SEEFLOW2" MIN. DRAINTO ATMOSPHEREDOUBLE CHECK VALVEASSEMBLY4" " " " #1 CHECK15" " #2 MIN. 4" THICK#67 WASHED STONE2" MIN. DIA. DRAIN BY GRAVITY TOATMOSPHERE AS REQUIRED BYCLT WATER SPECIFICATIONS. SEE NOTE #4 FINISHED GRADE TO BESLOPED AWAY FROM COVERTIE INTO CATCH BASIN OR STORMWATER MANHOLE PER DETAILSHOWN ABOVE. NO TIE IN TO STORMWATER PIPE WILL BE ALTERNATIVE:CATCH BASINWITH GRATESTORM PIPEDRAIN FROMBACKFLOW VAULTTOP OFDISCHARGINGSTORM PIPETEST COCK #1 STRAINERRECOMMENDEDTEST COCK #1 DOUBLE CHECK VALVE ASSEMBLY(DC) 3/4" & 1" BELOW GROUND VAULTPIPE MATERIAL AND FITTINGS SHALL BE AS SPECIFIED IN CLT WATERSTANDARDS & LOCATIONS FOR BPA'S REQUIRE CLT WATER :THERE SHALL BE NO TAPS, PIPING BRANCHES, UNAPPROVEDBYPASS PIPING, HYDRANTS, FIRE DEPT.