This allows you to connect the Reverse Osmosis System and pressure storage tank.
The Reverse Osmosis Tank Valve fits all standard Reverse Osmosis Pressure storage tanks.
You simply screw on to your 1/4 inch tank fitting and then it allows you to insert your 1/4 inch tubing. (aka 6mm OD Water Pipe Tubing)
1/4" female to 1/4" Pushfit