Finding the right commercial steam generator parts can be a trying process as many current distribution channels do not have the technical expertise or are not sophisticated enough to service the need. Out of frustration, many commercial steam and sauna room operators look to industrial suppliers and often purchase non-factory parts which is a big liability concern.
Accurate Industries http://www.accurateindustries.com/commercial-steam-rooms-parts-c-5000_5020.html
specializes in commercial steam and sauna factory authorized parts which are available for on-line purchasing. I believe shipping is free and they stock most everything you will need to operate steam bath and sauna bath equipment. They even provide commercial steam generator and sauna heater part images and troubleshooting videos to help identify what you need.