Yes iFLO will work for you if you have a one-inch pipe. The iFLO kit provides two different adaptors: an open and closed drain line adaptor.
The open drain line adaptor is a tiered plastic adaptor that will fit on a one-inch drain line.
The closed drain line adaptor can fit a one-inch drain line but will require extra force to snap in place. While this is the preferred method for installing iFLO, if you are working with a one-inch pipe we recommend testing this fitting before drilling into your drain line.