Description
Hayward FDXLWPS1931 replacement water pressure switch.Fits Hayward universal H-series low nox pool heater models H150FDN, H150FDP, H200FDN,H200FDP, H250FDN, H250FDPAlso fits Hayward universal H-series low nox pool heater models H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP- Model FDXLWPS1931 is compatible with all residential units manufactured January 2021 and later.Example Serial Number: 21122101XXXXXXXX– Model FDXLWPS1930 is compatible with all residential and commercial ASME units manufactured December 2020 and earlier.Example Serial Number: 21122012XXXXXXXX
