Genuine replacement part, this solenoid valve is designed for the EZH2O and HydroBoost Bottle Filling Stations from Elkay / Halsey Taylor. It is the solenoid required for all 'post-2018' serial number units from these ranges. Examples of the most popular compatible models are the HTHB8 and LZWSM82K along with the bottle filling top section of the combination units LZS8WSS2K and HTHB-HAC8. This is not to be confused with the solenoid required for the Elkay EZS8 single cooler and the bottom section of the LZS8WSS2K combination unit., those units require the 0000000802 solenoid. Please contact a member of the MIW team for further clarification if needed.