It also features a permanently lubricated compressor and fan motor

WQA Certified NSF/ANSI Standards 42

make the Bobrick B-6107x48 Stainless Steel Heavy-Duty Shower Curtain Rod your pick

Bradley Mills Partition Floor Mounted Over Head Braced Pilaster Shoe and Mounting Kit - 5"

so they have no electric motor to burn out and no moving parts to wear out

Apollo Reduced Pressure Zone Backflow Preventer, Lead Free Bronze, Apollo 4ALF-200 Series, FNPT Connection - 4ALF206T2F Bowl Shape-Semi-Circular It also features a permanentlyThe APOLLO reduced pressure zone (RPZ) back flow preventer is certified for use in potable water applications. Bronze body. Top mounted test cocks. UL Classified when ordered without ball valves.