HomeMy WebLinkAbout300.7NOTES:
1.THE BACKFLOW PREVENTION ASSEMBLY AND SUPPLY HOSE MUST BE DISCONNECTED DURING HYDROSTATIC PRESSURE TESTING OF THE
NEW WATER MAIN.
2.POLYPIG AND ALL DEBRIS SHALL BE REMOVED FROM SUMP OF VERTICAL CROSS VIA SANITARY METHOD PRIOR TO DISINFECTION OF NEW
WATER MAIN.
3.UPON REMOVAL OF POLYPIG, REMOVE TEMPORARY BLOW-OFF ASSEMBLY AND INSTALL 2" PLUG.
4.THE NEW WATER MAIN SHALL BE CONNECTED TO THE EXISTING SYSTEM ONLY AFTER NEW WATER MAIN IS POLYPIGGED, DISINFECTED
AND SATISFACTORY BACTERIOLOGICAL SAMPLE RESULTS ARE OBTAINED.
5.THE INTERIORS OF ALL PIPES AND FITTINGS TO BE USED IN FINAL CONNECTION MUST BE SWABBED OR SPRAYED WITH A 5-6% AVAILABLE
CHLORINE SOLUTION.
NEW DI WATER MAIN
NSF 61 SUPPLY HOSE
METERED BACKFLOW ASSEMBLY
(TO BE OBTAINED FROM CITY)
(1) 2 1 2" CONTROL VALVE
(1) CONSTRUCTION METER
(1) RPBA
METER SUPPORT (BY CONTRACTOR)
HYDRANT ON EXISTING WATER MAIN
POLYPIG
TEMPORARY BLOW-OFF ASSEMBLY
(1) 2" GALVANIZED PIPE
(1) 2" 90° BEND
(1) 2" GATE VALVE
POLYPIG STATION
(1)VERTICAL CROSS (MJxFL), SIZE TO MATCH WATER MAIN
(1)BLIND FLANGE WITH 2" TAP ON TOP OF CROSS
(1)TEMPORARY BLOW-OFF ASSEMBLY
(1)BLIND FLANGE ON BOTTOM OF CROSS
(1) PLUG (MJ) ON END OF CROSS WITH TEMPORARY THRUST BLOCKING
TEMPORARY BLOCKING
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
POLYPIGGING NEW WATER MAINS
STD. PLAN - 300.7
6/28/2023