How should a backflow preventer be installed in a residential system?
A licensed plumber should install the backflow preventer on the home’s main water line in the correct flow direction, with accessible test ports and shutoff valves. In Austin and Bastrop homes, outdoor units need freeze and flood protection.
- Mount above grade; keep the body level.
- Align the arrow with water flow.
- Add isolation valves and unions on both sides.
- Leave clearance for testing; avoid tight boxes.
- Flush lines, then pressure-test and verify operation.
Updated: 2025-12-29 00:00:00
Need help in Elgin, TX? Call (512) 309-0360 or book online.
Sources
- [0]https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNyelpMdHhBRRAB!2m1!1s0x0:0x9301c282a0ffa757!3m1!1s2@1:CIHM0ogKEICAgICrzZLtxAE%7CCgwIs6i3tAYQkKTQ4QI%7C?hl=en-US
- [1]https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUM3cXN1N3NBRRAB!2m1!1s0x0:0x9301c282a0ffa757!3m1!1s2@1:CIHM0ogKEICAgIC7qsu7sAE%7CCgsIy5b0tQYQkOe9WA%7C?hl=en-US
- [2]https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNMZ01LNE5BEAE!2m1!1s0x0:0x9301c282a0ffa757!3m1!1s2@1:CIHM0ogKEICAgICLgMK4NA%7CCgwIpfKtswYQ2JPC2gE%7C?hl=en-US
- [3]https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNMaXB1aGtRRRAB!2m1!1s0x0:0x9301c282a0ffa757!3m1!1s2@1:CIHM0ogKEICAgICLipuhkQE%7CCgwIsKHCswYQgKiHjAM%7C?hl=en-US
- [4]https://parobekplumbing.com/about-us/club-members/
- [5]https://parobekplumbing.com/plumbing/slab-leak-repair/
- [6]https://parobekplumbing.com/plumbing/clogged-toilet-repair/
- [7]https://www.parobekplumbing.com/dryer-vent-cleaning/
- [8]https://parobekplumbing.com/plumbing-services/kitchen-plumbing-repair/
- [9]https://parobekplumbing.com/about-us/frequently-asked-questions/
- [10]https://parobekplumbing.com/uncategorized/spring-ahead-prepare-your-ac-for-austins-rising-temps/
- [11]https://parobekplumbing.com/plumbing-services/plumbing-installation/