This Hydrotech Four Gallon Reverse Osmosis Tank and Shutoff Valve, also known as Hydrotech 42600029, is used with the Hydrotech E50TFC-3NSF reverse osmosis system and the Hydrotech E75TFC-3NSF reverse osmosis system. It also includes a replacement Hydrotech shutoff valve for use with those RO systems.
In the Hydrotech E50TFC, this steel RO tank can hold 2.2 gallons. In the Hydrotech E75TFC, it will hold 2.3 gallons. Please note the tank itself is a four gallon RO storage tank, but the bladder prevents it from holding that much.
This water storage tank may be used as a replacement RO tank in other applications, provided it is the appropriate-sized tank for your RO system.