Both devices feature the same benefits and basic functions. For a 1-inch or smaller supply line, the ¾ inch device is recommended. For supply lines that are 1¼ inch to 1-1/2 inch, the 1¼ inch device is recommended.

Homes with a 1 inch supply line have the option to chose installing a ¾ or a 1¼ inch Flo by Moen device.

Yes, going up to a Flo by Moen device size larger than your main supply line can be done. From our testing we found that the ¾ inch Flo by Moen device will operate properly on homes with 1-inch supply lines.

The 1¼ inch Flo by Moen device can be installed on plumbing supply lines up to 1½ inch. For supply lines larger than 1½ inch, please consult with a licensed plumber and refer to your local plumbing codes, or contact support@installFLOnow.com for any assistance.