We recommend contacting a licensed plumber. You can install it yourself, but it must be installed according to our specifications, and we will inspect it after installation.
If you hire someone to install it, provide him with a copy of the letter and installation guidelines enclosed in the letter.
Once it's installed, you or the installer should contact us to request an inspection. If it passes inspection, the final step is to have it tested by a tester from our List of Approved Backflow Testers.