The Nor-Ray-Vac pressure switch L104040 is not still available and has been replaced. The original model LR heater with EAC pressure switch (part No. L104040) has now been replaced with the Huba pressure switch. This comes in two versions: part No. 202861 for Nor Ray Vac models manufactured between March 2016 - Jan 2018, and part No. L104039 for Nor Ray Vac models manufactured between 1993 - March 2016.
Is the Nor-Ray-Vac LR pressure switch L104040 still available ?
Looking to upgrade your old heater? Look here for information on which product is the best like-for-like replacement.