I had to replace our salt water chlorination system, and chose to do it myself after the previous experience with a "professional" installation. During the review of the associated procedures and future maintenance activities, it became apparent that I should remove the ionizer cell unit from the system under certain conditions (freezing weather and abnormal water conditions) in order to help prolong its service life. This spool piece was specified, and upon receipt, I was very pleased with its precision design and fabrication as well as the fact that it came with a complete set of fittings and O-rings which will be really useful to have when I have to reinstall a lot of piping when I need to replace my pump and some valves in the foreseeable future. Great kit!