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TankRO 4.0 Gallon RO Expansion Tank – NSF Certified – Compact Reverse Osmosis Water Storage Tank Reservoir – with FREE Tank Ball Valve


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  • KEEP YOUR WATER HEALTHY - This tank is made from 100% food grade materials with a post cured diaphragm to ensure there are no chemicals in your water
  • FREE TANK VALVE - Free tank valve included, designed for 1/4" quick connect setup
  • COUNT ON YOUR TANK - Heavy duty commercial construction with durable deep drawn steel domes and precision welded seams 
  • PEACE OF MIND - We include a 1 year warranty and every tank is tested at multiple stages to make sure it will last
  • WHERE YOU NEED IT - Compact 15 x 12 x 12 size fits under most kitchen sinks
  • WHEN YOU NEED IT - 4 gallon storage gives you water on-demand

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