Very high quality reliable
Super easy push in Supply Valve 1/4".
Fits cold water supply tubes 3/8 & 1/2 inch. Retract the needle of the valve first.
You simply mount the valve on the cold water supply tube.
Just snug enough so that it will not turn or move.
Turn the tee handle at the top of the valve all the way to the right.
You will feel the handle bottom out.
Now connect the RO unit inlet tube to the push in fitting.

When you are ready to start up the system turn the tee handle all the way to the left .

Very high quality reliable Super easy push in Supply Valve 1/4". Fits cold water supply tubes 3/8 & 1/2 inch. Retract the needle of the valve first. You simply mount the valve on the cold water supply tube. So easy ... even I could do it!