HomeMy WebLinkAbout360.3NOTES:
1.THE RPBA MUST BE LISTED ON LATEST VERSION OF "BACKFLOW ASSEMBLIES APPROVED FOR INSTALLATION IN WASHINGTON STATE",
PUBLISHED BY THE STATE OF WASHINGTON DEPARTMENT OF HEALTH.
2.THE RPBA MUST BE TESTED BY A WASHINGTON STATE CERTIFIED BACKFLOW ASSEMBLY TESTER UPON INSTALLATION AND ANNUALLY
THEREAFTER. ASSEMBLY TO BE MAINTAINED BY PROPERTY OWNER. A COPY OF THE TEST REPORT SHALL BE SENT TO THE CITY OF
RENTON WATER UTILITY CROSS CONNECTION CONTROL SPECIALIST, FAX 425-430-7207, EMAIL BACKFLOW@RENTONWA.GOV.
3.PROTECT AGAINST FREEZING OR DAMAGE. USE HEAT-TAPE IF AREA IS SUBJECT TO FREEZING.
4.RPBA INSTALLATIONS THAT DIFFER FROM THE STANDARD PLAN MUST BE APPROVED BY THE CITY OF RENTON WATER UTILITY AND
WILL BE REVIEWED ON A CASE-BY-CASE BASIS TO ENSURE THEY MEET CURRENT MINIMUM REQUIREMENTS FOR INSTALLATION AND
FREEZE PROTECTION.
5.EACH VALVE SHALL BE MARKED WITH MODEL NUMBER AND DESIGNATION OF RESILIENT SEAT, SUCH AS "RS" OR "R", WHICH MUST BE
CAST, MOLDED, OR AFFIXED ONTO THE BODY OR BONNET OF THE VALVE. ALL FERROUS-BODIED VALVES SHALL BE COATED WITH A
MINIMUM OF 4 MILS EPOXY OR EQUIVALENT POLYMERIZED COATING.
6.INTERIOR WATER APPURTENANCES MUST CONFORM TO UPC REQUIREMENTS.
MATERIALS
A REDUCED PRESSURE
BACKFLOW ASSEMBLY
LINE-SIZED WASHINGTON STATE-APPROVED RPBA, INCLUDES (2) RESILIENT-SEATED SHUT-OFF VALVES AND
(4) RESILIENT-SEATED TEST-COCKS, BRASS PLUGS INSTALLED ON TEST-COCKS
PIPE SUPPORT ADJUSTABLE PIPE SADDLE SUPPORT, GRINNELL FIG 364 OR EQUAL, WITH BASE, BOLTED TO FLOOR
ADAPTER RESTRAINED FLANGE ADAPTER, EBAA IRON SERIES 2100 MEGAFLANGE OR EQUAL
WATER MAIN CLASS 53 DI PIPE (PExFL OR FLxFL)
BEND 90° BEND (FLxFL OR FLxMJ WITH RESTRAINED JOINTS)
PIPE PENETRATION PVC SLEEVE THROUGH SLAB WITH WATER-TIGHT GROUT
DRAIN FLOOR DRAIN FOR RELIEF PORT WITH APPROVED AIR GAP
BLOCKING CONCRETE THRUST BLOCKING PER STD PLAN 330.1
B
C
D
E
F
G
SERVICE
FROM METER E
H
12"
MIN
1' TO 5'
EXTERIOR
BUILDING
WALL
FINISHED
FLOOR
SERVICE
TO BUILDING
D
E
C
B
F
A
H
G
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
3" TO 10" RPBA
INTERIOR INSTALLATION
DOMESTIC AND IRRIGATION SERVICES
STD. PLAN - 360.3
6/28/2023