Stainless steel water connection High-grade chlorobutyl diaphragm Virgin polypropylene liner Plastic tank stand included CE approved BPA freeThe valve is also essential for performing system service or maintenance.Maintenance Free. The ROT-4.5 tank is built with a sealed brass air valve and o-ring sealed cap to ensure a leak-free air chamber, meaning no more checking the air precharge.High-Quality Construction: Features a virgin polypropylene liner, high-grade chlorobutyl diaphragm, and stainless steel 1/4" MPT water connection for superior durability and reliable performance. The diaphragm is post-cured to ensure water remains tasteless, odorless, and contaminant-free.Leak-Free Design: Equipped with a sealed brass air valve and o-ring sealed cap to provide a leak-free air chamber, maintaining optimal performance and safety for both residential and commercial RO systems.NSF/ANSI 58
