Download - SPILL – RESISTANT VACUUM BREAKER ASSEMBLY
![Page 1: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/1.jpg)
![Page 2: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/2.jpg)
SPILL – RESISTANT VACUUM BREAKER ASSEMBLY
SVBASVBA
TESTING
![Page 3: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/3.jpg)
Review of Backflow Prevention Assembly Test Procedures and Diagnostics
These procedures are intended as a review of basic test procedures and diagnostics intended for trained and experienced BAT testers.
These procedures are used in many areas of the U.S. and Canada.
The enclosed test procedures are not intended as a replacement for Approved Backflow Assembly Tester Education and/or Backflow Assembly Tester Certification, as required in many areas.
![Page 4: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/4.jpg)
SPILL- RESISTANT VACCUM BREAKER
FAILED TO OPEN
AIR INLET OPENED 1.0 PSID or Greater PSID
CONTINUED TO OPEN FULLY X YES NO
CHECK VALVE PASSED 1.0 PSID or Greater PSID
FAILED
PASSED TEST x YES NO
REMARKS:
![Page 5: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/5.jpg)
EXAMPLES OF REQUIRED PRELIMINARIES
IDENTIFY
INSPECT
OBSERVE
- Obtain permission to turn water off to test assembly including and estimated time water will be off. Fire sprinkler systems require additional notifications.
NOTIFY
- Verify make, model, size and serial number to insure the correct assembly the is being tested.
- Assembly shall be installed correctly and listed on the current “Assembly Approved List”
- General condition of assembly, direction of flow, shut off valves and test cocks properly located and usable.
![Page 6: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/6.jpg)
PRELIMINARY STEPS
NOTIFY
IDENTIFY
INSPECT
OBSERVE
![Page 7: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/7.jpg)
REMOVE CANOPY
![Page 8: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/8.jpg)
FLUSH TC
![Page 9: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/9.jpg)
FLUSH VENT VALVE
LOOSEN VENT VALVE SCREW UNTIL WATER TRIPS, THEN CLOSE
![Page 10: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/10.jpg)
CONNECT TEST KIT
UNUSED HOSES ARE RAPTED OR REMOVED
![Page 11: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/11.jpg)
CLOSE ALL VALVES
CONNECT TEST KIT
![Page 12: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/12.jpg)
CONNECT TEST KIT
INSTAL COMPENSATING VALVE NO TC # 1
![Page 13: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/13.jpg)
HIGH HOSE TO COMPENSATING VALVE
CONNECT TEST KIT
![Page 14: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/14.jpg)
PURGE
OPEN TC
![Page 15: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/15.jpg)
OPEN HIGH BLEED: FILL AIR INLET VALVE WITH WATER:CLOSE HIGH BLEED WHEN PURGED
PURGE
FILL AIR INLET VALVE
![Page 16: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/16.jpg)
ISOLATE
CLOSE SOV #2
![Page 17: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/17.jpg)
ELEVATE TEST KIT
ISOLATE
CENTER LINE OF TEST GAUGE MUST BE MAINTAINED AT THE SAME LEVEL AS THE VENT VALVE WHILE TESTING CV & INITIAL OPENING POINT OF AIR INLET VALVE
![Page 18: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/18.jpg)
CLOSE SOV #1
ISOLATE
![Page 19: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/19.jpg)
CV TEST
REDUCE PRESSURE TO ATMOSHERIC DOWNSTREAM OF CV
EXPECTATIONS??
PSID REDUCES, FLOW FROM VENT VALVE CEASES AND GAUGE STABILIZES, PSID ACROSS CV SHALL BE 1.0 PSID OR GREATER
O
WHEN PSID REDUCES, FLOW FROM VENT VALVE CEASES, CV DOES NOT HOLD 1.0 PSID
OR
OR
PSID MAY OR MAY NOT REDUCE AS FLOW CONTINUES FROM VENT VALVE
![Page 20: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/20.jpg)
SLOWLY OPEN AND VENT VALVE SCREW
CV PSID
![Page 21: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/21.jpg)
CV PSID
O
REMOVE VENT VALVE SCREW
TEST KIT MUST REMAIN ELEVATED
![Page 22: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/22.jpg)
VENT SCREW
TEST KIT REMAINS ELEVATED
WHEN FLOW CEASES FROM VENT VALVE & GAUGE STABILIZES; CV SHALL HOLD TIGHT AT 1.0 PSID OR GREATER (RECORD CV PSID LATER WHEN GAUGE IN LOWERED).
![Page 23: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/23.jpg)
INITIAL OPENING POINT
REDUCE WATER PRESSURE IN BODY
EXPECTIONS?
AIR INLET VALVE SHALL INITIALLY OPEN AT OR GREATER THAN 1.0 PSID
AIR INLET VALVE DOES NOT OPEN
OR
AIR INLET OPENS BELOW 1.0 PSID
OR
AIR INLET TEST
![Page 24: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/24.jpg)
STEP 1: AIR INLET VALVE INITIAL OPENING POINT
1. REDUCE PSID BY SLOWLY OPENING HIGH BLEED MAXIMUN OF ¼ TURN.
TEST KIT REMAINS ELEVATED
![Page 25: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/25.jpg)
WATER ON TOP OF AIR INLET VALVE WILL SUDDENDLY DROP OR FLOW FROM VENT VALVE AT INITIAL OPENING POINT
O
AIR INLET VALVE OPENING PSID
initial opening point
2. OBSERV PSID REDUCE SLOWLY TO THE INITIAL OPENING POINT OF THE AIR INLET VALVE.
4. RECORD INITIAL PSID PENING POINT
3. LOWER TEST KIT
![Page 26: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/26.jpg)
SPILL- RESISTANT VACCUM BREAKER
FAILED TO OPEN
AIR INLET OPENED 1.8 PSID
CONTINUED TO OPEN FULLY YES NO
CHECK VALVE PASSED 4.2 PSID
FAILED
PASSED TEST YES NO
REMARKS:
5) RECORD CV PSID (4.2) AND AIR INLET INITIAL OPENING PSID (2.0 PSI)
![Page 27: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/27.jpg)
EXPECTIONS?
OBSERVE AIR INLET VALVE CONTINUES TO OPEN FULLY
AIR INLET VALVE DOES NOT CONTINUE TO OPEN FULLY
OR
STEP 2: OBSERVE AIR INLET CONTINUES TO OPEN FULLY
![Page 28: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/28.jpg)
1. CLOSE HI BLEED VALVE (TEST GAUGE)
ONCE CV PSID VALUE AND INITIAL OPENING POINT OPENING OF THE AIR INLET VALVE IS RECORED………
AIR INLET VALVE CONTINUES TO FULLY OPEN
![Page 29: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/29.jpg)
AIR INLET VALVE CONTINUES TO FULLY OPEN
2. REMOVE HI BLEED HOSE FROM COMPENSATING VALVE TO ALLOW WATER TO DRAIN FROM THE SVBA BODY.
![Page 30: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/30.jpg)
AIR INLET VALVE CONTINUES TO FULLY OPEN
3. WHEN THIS FLOW OF WATER STOPS, OBSERVE AIR INLET VALVE CONTINUES TO FULLY OPENED.
OBSERVE AIR INLET FULLY OPENED
REPORT AND RECORD AIR INLET CONTINUED TO FULLY OPEN.
![Page 31: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/31.jpg)
SPILL- RESISTANT VACCUM BREAKER
FAILED TO OPEN
AIR INLET OPENED 1.8 PSID
CONTINUED TO OPEN FULLY X YES NO
CHECK VALVE PASSED 4.2 PSID
FAILED
PASSED TEST YES NO
REMARKS:
![Page 32: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/32.jpg)
INSTALL VENT VALVE SCREW
RETURN TO SERVICE
CLOSE CV #1
![Page 33: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/33.jpg)
CLOSE TC
RETURN TO SERVICE
![Page 34: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/34.jpg)
CLOSE TC
RETURN TO SERVICE
![Page 35: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/35.jpg)
OPEN SOV #1
RETURN TO SERVICE
![Page 36: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/36.jpg)
OPEN SOV #2
RETURN TO SERVICE
![Page 37: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/37.jpg)
REMOVE VALVE COMPENSATING VALVE
RETURN TO SERVICE
![Page 38: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/38.jpg)
INSTALL CANOPY
RETURN TO SERVICE
![Page 39: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/39.jpg)
RETURN TO SERVICE
“I WILL NOTIFY OWNER, WATER IS BACK ON & ASSEMBLY PASSED”.
IN CLASS……..
“I’M DONE TESTING THIS ASSEMBLY”
“I WILL CORRECTLY FILL OUT TEST REPORT”
![Page 40: SPILL – RESISTANT VACUUM BREAKER ASSEMBLY](https://reader034.vdocuments.mx/reader034/viewer/2022050723/568157ef550346895dc56623/html5/thumbnails/40.jpg)
SPILL- RESISTANT VACCUM BREAKER (SVBA)
FAILED TO OPEN
AIR INLET OPENED 1.8 PSID
CONTINUED TO OPEN FULLY X YES NO
CHECK VALVE PASSED 5.2 PSID
FAILED
PASSED TEST x YES NO
REMARKS: