EDEN 5-Stage Reverse Osmosis Water System - Removes All Contaminants (50 GPD) 50 GPD TFC Reverse Osmosis (RO) membrane Automatic Shut-Off Valve eliminates waste by closing the feed line when the tank is full Chrome finish Upgraded Faucet included with its mounting hardware. Non air Gap type. NSF listed 3.2 gallon storage tank Brine to Pure Water ratio is 3:1 (flow restrictor 400 mL)