Review on Dahszhi 4-Way Aquarium Air Flow Control Lever Valve: Premium Copper Distributor for Optimum Fish Tank Splitting and Pump Efficiency by Brittany Turner

It enabled my wife to control two different devices with her oxygen concentrator. .her CPAP sleep at night and her attachments during the day. The problem was that when switching from one device to another, the hoses had to be disconnected, which was a problem for them. The design of this valve solves the problem, it just flips the switch. I wish the valve matched the O2 hoses better, but the zip ties hold everything in place.