I have the following setup with a T with a valve to an above sink water filter. 
The line from the T has one steel braided 3/8” line and goes up to the sink as 3/8”. The other is a thin PVC line with a valve that goes to the above sink water filter. I would like to add an Ice Maker 1/4” steel braided line to the mix. I prefer to take advantage of the valve that is used by the above sink water filter. I have been trying to find a 1/4” T, but all ends are male. I can’t find a T with one end female and the other male or a 1/4” coupler. I don’t want to add another supply line nor mess with copper tubing. What recommendations can you give me?
Other Parts I currently have:
